chore: Fix broken trailing comma

Author: elliott-with-the-longest-name-on-github

.github/workflows/docs-preview-create.yml

@@ -60,5 +60,5 @@ jobs:
           client-payload: |-
             {
               "repo": "${{ inputs.repo }}",
-              "pr": "${{ inputs.pr }}",
+              "pr": "${{ inputs.pr }}"
             }