Add 2 docs to fluid/dev by adding soft links for write_docs_*.rst and contribute_to_paddle_*.md

doc/fluid/dev/contribute_to_paddle_cn.md

+../../v2/dev/contribute_to_paddle_cn.md
\ No newline at end of file

doc/fluid/dev/contribute_to_paddle_en.md

+../../v2/dev/contribute_to_paddle_en.md
\ No newline at end of file

doc/fluid/dev/index_cn.rst

@@ -4,6 +4,8 @@
 .. toctree::
   :maxdepth: 1
 
+  contribute_to_paddle_cn.md
+  write_docs_cn.md
   api_doc_std_cn.md
   new_op_cn.md
   new_op_kernel.md

doc/fluid/dev/index_en.rst

@@ -4,6 +4,8 @@ Development
 .. toctree::
   :maxdepth: 1
 
+  contribute_to_paddle_en.md
+  write_docs_en.md
   api_doc_std_en.md
   new_op_en.md
   new_op_kernel.md

doc/fluid/dev/write_docs_cn.rst

+../../v2/dev/write_docs_cn.rst
\ No newline at end of file

doc/fluid/dev/write_docs_en.rst

+../../v2/dev/write_docs_en.rst
\ No newline at end of file