CMake/Help/prop_tgt/VS_KEYWORD.rst

VS_KEYWORD
----------

Removed.  This once specified the Visual Studio project keyword
for the :generator:`Visual Studio 9 2008` generator, and older,
but all of those generators have been removed.

Use the :prop_tgt:`VS_GLOBAL_KEYWORD` target property to set the
keyword for Visual Studio 12 (2013) and newer.