Doxygen tutorials: warnings cleared

doc/tutorials/introduction/ios_install/ios_install.markdown

@@ -12,10 +12,12 @@ Required Packages
 Launch GIT client and clone OpenCV repository from [here](http://github.com/itseez/opencv)
 
 In MacOS it can be done using the following command in Terminal:
+
 @code{.bash}
 cd ~/<my_working _directory>
 git clone https://github.com/Itseez/opencv.git
 @endcode
+
 Building OpenCV from Source, using CMake and Command Line
 ---------------------------------------------------------
 
@@ -24,11 +26,13 @@ Building OpenCV from Source, using CMake and Command Line
     cd /
     sudo ln -s /Applications/Xcode.app/Contents/Developer Developer
     @endcode
+
 2.  Build OpenCV framework:
     @code{.bash}
     cd ~/<my_working_directory>
     python opencv/platforms/ios/build_framework.py ios
     @endcode
+
 If everything's fine, a few minutes later you will get
 \~/\<my_working_directory\>/ios/opencv2.framework. You can add this framework to your Xcode
 projects.
@@ -36,5 +40,4 @@ projects.
 Further Reading
 ---------------
 
-You can find several OpenCV+iOS tutorials here @ref Table-Of-Content-iOS.
-
+You can find several OpenCV+iOS tutorials here @ref tutorial_table_of_content_ios.