Add step to build english docs

Author: jondy

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

@@ -29,9 +29,15 @@ jobs:
             pip install linuxdoc
       - name: Prepare _site
         run: |
-            mkdir -p _site/pyarmor/docs/
+            mkdir -p _site/pyarmor/
             cp index.html _site/
-      - name: Build static files
+      - name: Build static files for en
+        id: build
+        run: |
+            make html
+            mv _build/html/ ../../../_site/pyarmor/docs
+        working-directory: ./pyarmor/docs
+      - name: Build static files for zh
         id: build
         run: |
             make html