Merge topic 'doc-multi-config-prop'

1d7daa668c Help: Add Ninja Multi-Config to list in GENERATOR_IS_MULTI_CONFIG

Acked-by: Kitware Robot <[email protected]>
Acked-by: Kyle Edwards <[email protected]>
Merge-request: !5737

Help/prop_gbl/GENERATOR_IS_MULTI_CONFIG.rst

@@ -5,7 +5,11 @@ GENERATOR_IS_MULTI_CONFIG
 
 Read-only property that is true on multi-configuration generators.
 
-True when using a multi-configuration generator
-(such as :ref:`Visual Studio Generators` or :generator:`Xcode`).
+True when using a multi-configuration generator such as:
+
+* :generator:`Ninja Multi-Config`
+* :ref:`Visual Studio Generators`
+* :generator:`Xcode`
+
 Multi-config generators use :variable:`CMAKE_CONFIGURATION_TYPES`
 as the set of configurations and ignore :variable:`CMAKE_BUILD_TYPE`.