Fix GitHub token variable usage

azure-pipelines.yml

@@ -857,7 +857,7 @@ stages:
           then
             git commit -am 'Automated API Docs update'
             git push -f --set-upstream origin api-docs
-            curl -X POST -H 'Authorization: token $GITHUB_TOKEN' -H "Accept: application/vnd.github.v3+json" https://api.github.com/repos/prowlarr/prowlarr/pulls -d '{"head":"api-docs","base":"develop","title":"Update API docs"}'
+            curl -X POST -H 'Authorization: token ${GITHUB_TOKEN}' -H "Accept: application/vnd.github.v3+json" https://api.github.com/repos/prowlarr/prowlarr/pulls -d '{"head":"api-docs","base":"develop","title":"Update API docs"}'
           else
             echo "No changes since last run"
           fi