fix: use vars.WP_REST_URL instead of secrets.WP_REST_URL

WP_REST_URL is configured as a repository variable, not a secret.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: JohnRDOrazio

.github/workflows/deploy-docs.yml

@@ -75,7 +75,7 @@ jobs:
         if: steps.changes.outputs.changed_docs != ''
         id: deploy
         env:
-          WP_REST_URL: ${{ secrets.WP_REST_URL }}
+          WP_REST_URL: ${{ vars.WP_REST_URL }}
           WP_APP_USERNAME: ${{ secrets.WP_APP_USERNAME }}
           WP_APP_PASSWORD: ${{ secrets.WP_APP_PASSWORD }}
         run: |
@@ -184,7 +184,7 @@ jobs:
       - name: Translate deployed pages
         if: steps.deploy.outputs.deployed_ids != ''
         env:
-          WP_REST_URL: ${{ secrets.WP_REST_URL }}
+          WP_REST_URL: ${{ vars.WP_REST_URL }}
           WP_APP_USERNAME: ${{ secrets.WP_APP_USERNAME }}
           WP_APP_PASSWORD: ${{ secrets.WP_APP_PASSWORD }}
         run: |