ci: use same pull request title as commit mesage (#93)

Author: Enda

.github/workflows/fetch_api_client.yaml

@@ -19,7 +19,7 @@ jobs:
         run: ./scripts/fetch_api.sh ${{ github.event.client_payload.download_url }}
       - uses: peter-evans/create-pull-request@v3
         with:
-          title: "Update API client"
+          title: "chore(openapi): update ${{ github.event.client_payload.id }} OpenAPI document"
           token: "${{ env.APP_SERVICES_TOKEN }}"
           commit-message: "chore(openapi): update ${{ github.event.client_payload.id }} OpenAPI document"
           author: "app-services-ci <app-services-ci@users.noreply.github.com>"
@@ -28,7 +28,9 @@ jobs:
           delete-branch: true
           reviewers: craicoverflow, wtrocki
           body: |
-            Auto-generated API client for ${{ github.event.client_payload.id }}
+            _This pull request was auto-generated_
+
+            This PR adds the latest version OpenAPI document version for **${{ github.event.client_payload.id }}**.
             
             ## SDK update procedure