/usr/share/cmake-3.10/Help/generator/ is in cmake-data 3.10.2-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/cmake-3.10/Help/generator/Borland Makefiles.rst
/usr/share/cmake-3.10/Help/generator/CodeBlocks.rst
/usr/share/cmake-3.10/Help/generator/CodeLite.rst
/usr/share/cmake-3.10/Help/generator/Eclipse CDT4.rst
/usr/share/cmake-3.10/Help/generator/Green Hills MULTI.rst
/usr/share/cmake-3.10/Help/generator/KDevelop3.rst
/usr/share/cmake-3.10/Help/generator/Kate.rst
/usr/share/cmake-3.10/Help/generator/MSYS Makefiles.rst
/usr/share/cmake-3.10/Help/generator/MinGW Makefiles.rst
/usr/share/cmake-3.10/Help/generator/NMake Makefiles JOM.rst
/usr/share/cmake-3.10/Help/generator/NMake Makefiles.rst
/usr/share/cmake-3.10/Help/generator/Ninja.rst
/usr/share/cmake-3.10/Help/generator/Sublime Text 2.rst
/usr/share/cmake-3.10/Help/generator/Unix Makefiles.rst
/usr/share/cmake-3.10/Help/generator/VS_TOOLSET_HOST_ARCH.txt
/usr/share/cmake-3.10/Help/generator/Visual Studio 10 2010.rst
/usr/share/cmake-3.10/Help/generator/Visual Studio 11 2012.rst
/usr/share/cmake-3.10/Help/generator/Visual Studio 12 2013.rst
/usr/share/cmake-3.10/Help/generator/Visual Studio 14 2015.rst
/usr/share/cmake-3.10/Help/generator/Visual Studio 15 2017.rst
/usr/share/cmake-3.10/Help/generator/Visual Studio 6.rst
/usr/share/cmake-3.10/Help/generator/Visual Studio 7 .NET 2003.rst
/usr/share/cmake-3.10/Help/generator/Visual Studio 7.rst
/usr/share/cmake-3.10/Help/generator/Visual Studio 8 2005.rst
/usr/share/cmake-3.10/Help/generator/Visual Studio 9 2008.rst
/usr/share/cmake-3.10/Help/generator/Watcom WMake.rst
/usr/share/cmake-3.10/Help/generator/Xcode.rst