fix docs gen ci

.github/workflows/generate-docs.yaml

@@ -21,7 +21,7 @@ jobs:
         with:
           roc-version: nightly
       - name: Generate docs
-        run: roc docs package/main.roc
+        run: roc docs platform/main.roc
       - name: Fix absolute paths
         run: |
           find generated-docs/ -type f -name '*.html' -exec sed -i "s/\(href\|src\)=\"\//\1=\"\/${{ github.event.repository.name }}\//g" {} +