chore(internal): only run examples workflow in main repo (#1450)

Author: stainless-app[bot]

.github/workflows/ci.yml

@@ -68,6 +68,7 @@ jobs:
   examples:
     name: examples
     runs-on: ubuntu-latest
+    if: github.repository == 'openai/openai-node'
 
     steps:
       - uses: actions/checkout@v4