Update README.md

Author: hjsblogger

README.md

@@ -30,8 +30,8 @@ Environment variables *LT_USERNAME* and *LT_ACCESS_KEY* are added under *env* in
 
 ```yaml
 env:
- LT_USERNAME: ${ YOUR_LAMBDATEST_USERNAME()}
- LT_ACCESS_KEY: ${ YOUR_LAMBDATEST_ACCESS_KEY()}
+ LT_USERNAME: LT_USERNAME
+ LT_ACCESS_KEY: LT_ACCESS_KEY
 ```
 
 Automation tests using the Robot framework are located in the *Tests* folder (i.e. lt_todo_app.robot and lt_selenium_playground.robot). In the matrix YAML file, *files* specifies a list (or array) of *.robot* files that have to be executed on the Hypertest grid.
@@ -144,4 +144,4 @@ Run the following command on the terminal to trigger the tests in Robot files on
 ./concierge --user "${ YOUR_LAMBDATEST_USERNAME()}" --key "${ YOUR_LAMBDATEST_ACCESS_KEY()}" --config robot_hypertest_autosplit_sample.yaml --verbose
 ``` 
 
-Visit [Hypertest Automation Dashboard](https://automation.lambdatest.com/hypertest) to check the status of execution
+Visit [Hypertest Automation Dashboard](https://automation.lambdatest.com/hypertest) to check the status of execution