Add token variable for deploy

Author: jaapio

.github/workflows/documentation.yaml

@@ -59,5 +59,5 @@ jobs:
         uses: "ad-m/github-push-action@master"
         with:
           directory: "docs"
-          token: "${{ secrets.BOT_TOKEN }}"
+          github_token: "${{ secrets.BOT_TOKEN }}"
           repository: "phpDocumentor/docs"