Fix API key reference for gh-pages (#1821)

Author: natoverse

.github/workflows/gh-pages.yml

@@ -15,7 +15,7 @@ jobs:
     env:
       GH_PAGES: 1
       DEBUG: 1
-      GRAPHRAG_API_KEY: ${{ secrets.OPENAI_NOTEBOOK_KEY }}
+      GRAPHRAG_API_KEY: ${{ secrets.GRAPHRAG_API_KEY }}
       GRAPHRAG_LLM_MODEL: ${{ secrets.GRAPHRAG_LLM_MODEL }}
       GRAPHRAG_EMBEDDING_MODEL: ${{ secrets.GRAPHRAG_EMBEDDING_MODEL }}
 
@@ -50,4 +50,4 @@ jobs:
         with:
           branch: gh-pages
           folder: site
-          clean: true
+          clean: true