Adjust links

source/advanced_usage/index.rst

@@ -8,7 +8,7 @@
     Complete this guide
 
 ..  toctree::
-    :maxdepth: 1
+    :maxdepth: 2
 
     deploy/index.rst
     development/index.rst

source/user_guides/howto/index.rst

-####################
-如何使用PaddlePaddle
-####################
-
-.. toctree::
-   :maxdepth: 2
-
-
-   prepare_data/index
-   configure_simple_model/index
-   training/index
-

source/user_guides/index.rst

@@ -10,5 +10,7 @@
 ..  toctree::
     :maxdepth: 2
 
-    howto/index.rst
+    howto/prepare_data/index
+    howto/configure_simple_model/index
+    howto/training/index
     model_bank/index.rst