Fix typo in README (#11)

Co-authored-by: Alexander Dovnar <[email protected]>

Author: martinmaillard

README.md

@@ -16,7 +16,7 @@ Result JSON document returned from Jelastic.
 ### Example usage
 ```yaml
   - name: Run GetEnv command
-    uses: DovnarAlexander/github-action-jelastic@master
+    uses: DovnarAlexander/github-actions-jelastic@master
     with:
       jelastic_url: app.mycloud.by
       jelastic_username: ${{ secrets.JELASTIC_USERNAME }}