cnn_3dobj: add call to ocv_module_disable so documentation is generated

also fix some minor doxygen issues

modules/cnn_3dobj/CMakeLists.txt

@@ -24,7 +24,9 @@ else()
   message(STATUS "Glog:   NO")
 endif()
 
-if(HAVE_CAFFE)
+if(NOT HAVE_CAFFE)
+    ocv_module_disable(cnn_3dobj)
+else()
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cnn_3dobj_config.hpp.in
                ${CMAKE_CURRENT_SOURCE_DIR}/include/opencv2/cnn_3dobj_config.hpp @ONLY)
 

modules/cnn_3dobj/tutorials/data_generation/data_generation.markdown

@@ -12,7 +12,6 @@ In this tutorial you will learn how to
 Code
 ----
 
-You can download the code from [here ](https://github.com/Wangyida/opencv_contrib/blob/cnn_3dobj/samples/demo_sphereview_data.cpp).
 @include cnn_3dobj/samples/demo_sphereview_data.cpp
 
 Explanation

modules/cnn_3dobj/tutorials/feature_classification/classify.markdown

-Classify {#tutorial_classify}
+Classify {#tutorial_feature_classification}
 ===============
 
 Goal
@@ -13,7 +13,6 @@ In this tutorial you will learn how to
 Code
 ----
 
-You can download the code from [here ](https://github.com/Wangyida/opencv_contrib/blob/cnn_3dobj/samples/demo_classify.cpp).
 @include cnn_3dobj/samples/demo_classify.cpp
 
 Explanation

modules/cnn_3dobj/tutorials/model_analysis/model_analysis.markdown

-Training data generation using Icosphere {#tutorial_model_analysis}
+Training Model Analysis {#tutorial_model_analysis}
 =============
 
 Goal
@@ -12,7 +12,6 @@ In this tutorial you will learn how to
 Code
 ----
 
-You can download the code from [here ](https://github.com/Wangyida/opencv_contrib/blob/cnn_3dobj/samples/demo_model_analysis.cpp).
 @include cnn_3dobj/samples/demo_model_analysis.cpp
 
 Explanation