Fix typo

README.md

@@ -41,7 +41,7 @@ jobs:
           sleep 5
 ```
 
-More options such as using a different repo to store the mutex (which allows sharing a mutex between jobs from arbitrary repos) or using different access tokens can be found in [actions.yml](./actions.yml)
+More options such as using a different repo to store the mutex (which allows sharing a mutex between jobs from arbitrary repos) or using different access tokens can be found in [action.yml](./action.yml).
 
 ## Motivation