docs: correct grammar (#13194)

Author: momokid

CONTRIBUTING.md

@@ -108,7 +108,7 @@ Code that is written needs to be tested to ensure that it achieves the desired b
 
 ##### Unit tests
 
-Some of the packages within jest have a `__tests__` directory. This is where unit tests reside in. If the scope of your work only requires a unit test, this is where you will write it in. Tests here usually don't require much if any setup.
+Some of the packages within jest have a `__tests__` directory. This is where unit tests reside in. If the scope of your work only requires a unit test, this is where you will write it in. Tests here usually don't require much of any setup.
 
 ##### Integration tests
 

docs/GettingStarted.md

@@ -156,7 +156,7 @@ npm install --save-dev ts-jest
 
 #### Type definitions
 
-There are two ways have [Jest global APIs](GlobalAPI.md) typed for test files written in TypeScript.
+There are two ways to have [Jest global APIs](GlobalAPI.md) typed for test files written in TypeScript.
 
 You can use type definitions which ships with Jest and will update each time you update Jest. Simply import the APIs from `@jest/globals` package:
 

website/versioned_docs/version-29.0/GettingStarted.md

@@ -156,7 +156,7 @@ npm install --save-dev ts-jest
 
 #### Type definitions
 
-There are two ways have [Jest global APIs](GlobalAPI.md) typed for test files written in TypeScript.
+There are two ways to have [Jest global APIs](GlobalAPI.md) typed for test files written in TypeScript.
 
 You can use type definitions which ships with Jest and will update each time you update Jest. Simply import the APIs from `@jest/globals` package: