docs: Get rid of hardcoded version number in README (#93)

* docs: Get rid of hardcoded version number in README

* Split lines

Author: amannn

README.md

@@ -32,7 +32,9 @@ jobs:
   main:
     runs-on: ubuntu-latest
     steps:
-      - uses: amannn/[email protected]
+      # Please look up the latest version from
+      # https://github.com/amannn/action-semantic-pull-request/releases
+      - uses: amannn/[email protected]
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 ```