Help: Mention CMP0131 in LINK_LIBRARIES docs

Help/policy/CMP0131.rst

@@ -20,7 +20,7 @@ account for this change.
 
 The ``OLD`` behavior for this policy is to use :prop_tgt:`LINK_LIBRARIES`
 content guarded by :genex:`$<LINK_ONLY:...>` even for non-linking
-usage requirements.  The ``NEW`` behavior for this policy is to to use
+usage requirements.  The ``NEW`` behavior for this policy is to use
 the guarded content only for link dependencies.
 
 This policy was introduced in CMake version 3.24.  Use the

Help/prop_tgt/LINK_LIBRARIES.rst

@@ -14,10 +14,13 @@ followed by indirect dependencies from the transitive closure of the
 direct dependencies' :prop_tgt:`INTERFACE_LINK_LIBRARIES` properties.
 See policy :policy:`CMP0022`.
 
-Contents of ``LINK_LIBRARIES`` may use "generator expressions" with the
-syntax ``$<...>``.  See the :manual:`cmake-generator-expressions(7)` manual
-for available expressions.  See the :manual:`cmake-buildsystem(7)` manual
-for more on defining buildsystem properties.
+Contents of ``LINK_LIBRARIES`` may use
+:manual:`generator expressions <cmake-generator-expressions(7)>` with the
+syntax ``$<...>``.  Policy :policy:`CMP0131` affects the behavior of the
+:genex:`LINK_ONLY` generator expression for this property.
+
+See the :manual:`cmake-buildsystem(7)` manual for more on defining
+buildsystem properties.
 
 .. include:: LINK_LIBRARIES_INDIRECTION.txt