Fix resolver name

Author: neubig

.github/workflows/openhands-resolver.yml

@@ -16,4 +16,4 @@ jobs:
       PAT_FORK_OWNER: ${{ secrets.PAT_FORK_OWNER }}
       LLM_MODEL: ${{ secrets.LLM_MODEL }}
       LLM_API_KEY: ${{ secrets.LLM_API_KEY }}
-      LLM_BASE: ${{ secrets.LLM_BASE }}
+      LLM_BASE_URL: ${{ secrets.LLM_BASE_URL }}