Fix bug

Author: jondy

.github/workflows/build-docs-actions.yml

@@ -34,6 +34,7 @@ jobs:
             cp pyarmor/index.html _site/pyarmor/
             cp -a pyarmor/assets/ _site/pyarmor/assets
             cp pyarmor/docs/index.html _site/pyarmor/docs/
+            cp pyarmor/learn/index.html _site/pyarmor/learn/
             cp -a pyarmor/try/ _site/pyarmor/try
       - name: Build static files for en
         run: |