Change readme usage

DavideViolante · DavideViolante · commit b4bee827f27b · 2021-06-21T23:23:15.000+02:00
diff --git a/README.md b/README.md
@@ -36,7 +36,7 @@ jobs:
         node-version: ${{ matrix.node-version }}
     - run: npm ci
     - name: serverless deploy
-      uses: serverless/github-action@master
+      uses: serverless/github-action@v1
       with:
         args: deploy
       env:
