Update documentation and "action.yml"

action.yml

@@ -8,6 +8,10 @@ inputs:
   github_token:
     description: 'Token for the repo. Can be passed in using {{ secrets.GITHUB_TOKEN }}'
     required: true
+  repository:
+    description: 'Repository name to push. Default or empty value represents current github repository (${GITHUB_REPOSITORY})'
+    default: ''
+    required: false
   branch:
     description: 'Destination branch to push changes'
     required: false