fix CMakeList bug

paddle/fluid/framework/CMakeLists.txt

@@ -138,7 +138,7 @@ nv_test(op_registry_test SRCS op_registry_test.cc DEPS op_registry)
 
 py_proto_compile(framework_py_proto SRCS framework.proto data_feed.proto)
 #Generate an empty \
-    __init__.py to make framework_py_proto as a valid python module.
+    #__init__.py to make framework_py_proto as a valid python module.
 add_custom_target(framework_py_proto_init ALL COMMAND ${CMAKE_COMMAND} -E touch __init__.py)
 add_dependencies(framework_py_proto framework_py_proto_init)
 if (NOT WIN32)