Remove readme typo

README.md

@@ -224,7 +224,7 @@ In the call to StartBuild, we pass in all
 `GITHUB_` [environment variables][github environment variables] in the GitHub Actions environment,
 plus any environment variables that you specified in the `evn-passthrough` input value.
 
-By default, Regardless of the project configuration in CodeBuild or GitHub Actions,
+By default, regardless of the project configuration in CodeBuild or GitHub Actions,
 we always pass the following parameters and values to CodeBuild in the StartBuild API call.
 
 | CodeBuild value          | GitHub value                           |