[docs] Update CMake cross compiling guide link

The CMake community Wiki has been moved to the [[ https://gitlab.kitware.com/cmake/community/wikis/home | Kitware GitLab Instance ]].
Also, the original anchor for `Information how to set up various cross compiling toolchains` section might not work as expected. The original content is now being collapsed, so browser won't navigate to the right section directly.

Hence, I think it might be better to provide the section name instead of `this section` with link to help readers find the right section by themselves.

Reviewed By: void

Differential Revision: https://reviews.llvm.org/D104996
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oToToT 2021-07-14 21:14:12 +08:00
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@ -733,11 +733,11 @@ For more information about testing, see the :doc:`TestingGuide`.
Cross compiling
===============
See `this wiki page <http://www.vtk.org/Wiki/CMake_Cross_Compiling>`_ for
See `this wiki page <https://gitlab.kitware.com/cmake/community/wikis/doc/cmake/CrossCompiling>`_ for
generic instructions on how to cross-compile with CMake. It goes into detailed
explanations and may seem daunting, but it is not. On the wiki page there are
several examples including toolchain files. Go directly to `this section
<http://www.vtk.org/Wiki/CMake_Cross_Compiling#Information_how_to_set_up_various_cross_compiling_toolchains>`_
several examples including toolchain files. Go directly to the
``Information how to set up various cross compiling toolchains`` section
for a quick solution.
Also see the `LLVM-specific variables`_ section for variables used when