Update README.md

Author: JakePartusch

README.md

@@ -33,7 +33,7 @@ Basic Usage
 ```yaml
 steps:
   - name: Waiting for 200 from the Netlify Preview
-    uses: jakepartusch/wait-for-netlify-action@v1.3
+    uses: jakepartusch/wait-for-netlify-action@v1.4
     id: waitFor200
     with:
       site_name: "jakepartusch"