Fix build for l10n.rst

developer_manual/app/l10n.rst

@@ -153,14 +153,14 @@ the server code::
 Now the following folder structure is available::
 
     myapp/l10n
-    ├── es
-    │   └── myapp.po
-    ├── es.js
-    ├── es.json
-    ├── es.php
-    ├── l10n.pl
-    └── templates
-        └── myapp.pot
+    |-- es
+    |   |-- myapp.po
+    |-- es.js
+    |-- es.json
+    |-- es.php
+    |-- l10n.pl
+    |-- templates
+        |-- myapp.pot
 
 You then just need the :file:`.php`, :file:`.json` and :file:`.js` files for a
 working localized app.