change dir name

Author: stefafafan

.github/workflows/branch-preview.yaml

@@ -27,12 +27,12 @@ jobs:
       uses: actions/checkout@v4
       with:
         repository: php/doc-en
-        path: doc-en
+        path: en
 
     - name: Checkout doc-ja
       uses: actions/checkout@v4
       with:
-        path: doc-ja
+        path: ja
 
     - name: Set up PHP
       uses: shivammathur/setup-php@v2