Improve actions docs (#31)

README.md

@@ -47,7 +47,7 @@ An example configuration is provided in the `example/` directory, and an example
 
 1. Include this action in your workflow by one of the supported methods:
 
-   - Include it as a regular action: `jswny/[email protected]`
+   - Include it as a regular action: `uses: jswny/[email protected]`
    - Include it as a Docker image to prevent having to build the image each time the action is run: `uses: docker://ghcr.io/jswny/sad:v3.0.0`
 
 2. Pass in any configuration which hasn't been provided by the configuration file source as environment variables into the action. Command line configuration is not supported by the action.