small typo in question n18

README.md

@@ -123,7 +123,7 @@ We are so thankful for every contribution, which makes sure we can deliver top-n
 | 15  | [A Developer is creating an application that needs to locate the public IPv4 address of the Amazon EC2 instance on which it runs. How can the application locate this information?](#a-developer-is-creating-an-application-that-needs-to-locate-the-public-ipv4-address-of-the-amazon-ec2-instance-on-which-it-runs-how-can-the-application-locate-this-information)
 | 16  | [The development team is working on an API that will be served from Amazon API gateway. The API will be served from three environments: development, test, and production. The API Gateway is configured to use 237 GB of cache in all three stages. Which is the MOST cost-efficient deployment strategy?](#the-development-team-is-working-on-an-api-that-will-be-served-from-amazon-api-gateway-the-api-will-be-served-from-three-environments-development-test-and-production-the-api-gateway-is-configured-to-use-237-gb-of-cache-in-all-three-stages-which-is-the-most-cost-efficient-deployment-strategy)
 | 17  | [A company is migrating its on-premises database to Amazon RDS for MySQL. The company has read-heavy workloads, and wants to make sure it re-factors its code to achieve optimum read performance for its queries. How can this objective be met?](#a-company-is-migrating-its-on-premises-database-to-amazon-rds-for-mysql-the-company-has-read-heavy-workloads-and-wants-to-make-sure-it-re-factors-its-code-to-achieve-optimum-read-performance-for-its-queries-how-can-this-objective-be-met)
-| 18  | [A developer needs to modify an application architecture to meet new functional requirements. Application data is stored in Amazon DynamoDB and processed for analysis in a rightly batch. The system analysts do not want to wait unit the next day to view the processed data and have asked to have it available in near-real time. Which application architect pattern would enables the data to be processed as it is received?](#a-developer-needs-to-modify-an-application-architecture-to-meet-new-functional-requirements-application-data-is-stored-in-amazon-dynamodb-and-processed-for-analysis-in-a-rightly-batch-the-system-analysts-do-not-want-to-wait-unit-the-next-day-to-view-the-processed-data-and-have-asked-to-have-it-available-in-near-real-time-which-application-architect-pattern-would-enables-the-data-to-be-processed-as-it-is-received)
+| 18  | [A developer needs to modify an application architecture to meet new functional requirements. Application data is stored in Amazon DynamoDB and processed for analysis in a nightly batch. The system analysts do not want to wait unit the next day to view the processed data and have asked to have it available in near-real time. Which application architect pattern would enables the data to be processed as it is received?](#a-developer-needs-to-modify-an-application-architecture-to-meet-new-functional-requirements-application-data-is-stored-in-amazon-dynamodb-and-processed-for-analysis-in-a-nightly-batch-the-system-analysts-do-not-want-to-wait-unit-the-next-day-to-view-the-processed-data-and-have-asked-to-have-it-available-in-near-real-time-which-application-architect-pattern-would-enables-the-data-to-be-processed-as-it-is-received)
 | 19  | [PLACEHOLDER 2](#placeholder-2)
 | 20  | [A software company needs to make sure user-uploaded documents are securely stored in Amazon S3. The documents must be encrypted at rest in Amazon S3. The company does not want to manage the security infrastructure in-house, but the company still needs extra protection to ensure it has control over its encryption keys due to industry regulations. Which encryption strategy should a developer use to meet these requirements?](#a-software-company-needs-to-make-sure-user-uploaded-documents-are-securely-stored-in-amazon-s3-the-documents-must-be-encrypted-at-rest-in-amazon-s3-the-company-does-not-want-to-manage-the-security-infrastructure-in-house-but-the-company-still-needs-extra-protection-to-ensure-it-has-control-over-its-encryption-keys-due-to-industry-regulations-which-encryption-strategy-should-a-developer-use-to-meet-these-requirements)
 | 21  | [An application uses Amazon Kinesis Data Streams to ingest and process large streams of data records in real time. Amazon EC2 instances consume and process the data from the shards of the Kinesis data stream by using Amazon Kinesis Client Library (KCL). The application handles the failure scenarios and does not require standby workers. The application reports that a specific shard is receiving more data than expected. To adapt to the changes in the rate of data flow, the 'hot' shard is resharded. Assuming that the initial number of shards in the Kinesis data stream is 4, and after resharding the number of shards increased to 6, what is the maximum number of EC2 instances that can be deployed to process data from all the shards?](#an-application-uses-amazon-kinesis-data-streams-to-ingest-and-process-large-streams-of-data-records-in-real-time-amazon-ec2-instances-consume-and-process-the-data-from-the-shards-of-the-kinesis-data-stream-by-using-amazon-kinesis-client-library-kcl-the-application-handles-the-failure-scenarios-and-does-not-require-standby-workers-the-application-reports-that-a-specific-shard-is-receiving-more-data-than-expected-to-adapt-to-the-changes-in-the-rate-of-data-flow-the-hot-shard-is-resharded-assuming-that-the-initial-number-of-shards-in-the-kinesis-data-stream-is-4-and-after-resharding-the-number-of-shards-increased-to-6-what-is-the-maximum-number-of-ec2-instances-that-can-be-deployed-to-process-data-from-all-the-shards)
@@ -651,7 +651,7 @@ We are so thankful for every contribution, which makes sure we can deliver top-n
 
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-### A developer needs to modify an application architecture to meet new functional requirements. Application data is stored in Amazon DynamoDB and processed for analysis in a rightly batch. The system analysts do not want to wait unit the next day to view the processed data and have asked to have it available in near-real time. Which application architect pattern would enables the data to be processed as it is received?
+### A developer needs to modify an application architecture to meet new functional requirements. Application data is stored in Amazon DynamoDB and processed for analysis in a nightly batch. The system analysts do not want to wait unit the next day to view the processed data and have asked to have it available in near-real time. Which application architect pattern would enables the data to be processed as it is received?
 
 - [x] Event driven.
 - [ ] Client served driven.