Fix environment heading

Author: stav

README.md

@@ -41,7 +41,7 @@ jobs:
 - `AWS-EU-WEST-3` : Paris
 - `AWS-SA-EAST-1` : São Paulo
 
-### `location`
+### `environment`
 The environment you want to run the test in. If you don't use environment omit this parameter
 
 ## Outputs
@@ -57,4 +57,4 @@ URL of a human readable report of the test execution
 
 ## Help
 
-For any help using this integration, reach out to `[email protected]`.
+For any help using this integration, reach out to `[email protected]`.