Help: Fix language standard link text in cmake-compile-features(7)

Include each language name in the text of the link to its standards
property.

Help/manual/cmake-compile-features.7.rst

@@ -326,7 +326,7 @@ the feature-appropriate include directory
 Supported Compilers
 ===================
 
-CMake is currently aware of the :prop_tgt:`language standards <CXX_STANDARD>`
+CMake is currently aware of the :prop_tgt:`C++ standards <CXX_STANDARD>`
 and :prop_gbl:`compile features <CMAKE_CXX_KNOWN_FEATURES>` available from
 the following :variable:`compiler ids <CMAKE_<LANG>_COMPILER_ID>` as of the
 versions specified for each:
@@ -338,7 +338,7 @@ versions specified for each:
 * ``SunPro``: Oracle SolarisStudio version 12.4.
 * ``Intel``: Intel compiler versions 12.1 through 17.0.
 
-CMake is currently aware of the :prop_tgt:`language standards <CUDA_STANDARD>`
+CMake is currently aware of the :prop_tgt:`CUDA standards <CUDA_STANDARD>`
 from the following :variable:`compiler ids <CMAKE_<LANG>_COMPILER_ID>` as of the
 versions specified for each: