Help: Use standard policy advice in CMP0000

This was missed in commit ad3c2c0b03 (Help: Normalize and consolidate
standard policy advice paragraph, 2024-01-11, v3.29.0-rc1~124^2~2).

Help/policy/CMP0000.rst

@@ -21,14 +21,12 @@ the project.  See documentation of :command:`cmake_minimum_required` for
 details.
 
 Note that the command invocation must appear in the ``CMakeLists.txt``
-file itself; a call in an included file is not sufficient.  However,
-the  :command:`cmake_policy` command may be called to set policy ``CMP0000``
-to ``OLD`` or ``NEW`` behavior explicitly.  The ``OLD`` behavior is to
-silently ignore the missing invocation.  The ``NEW`` behavior is to issue
-an error instead of a warning.  An included file may set ``CMP0000``
-explicitly to affect how this policy is enforced for the main
-``CMakeLists.txt`` file.
-
-This policy was introduced in CMake version 2.6.0.
+file itself; a call in an included file is not sufficient.  The ``OLD``
+behavior was to silently ignore the missing invocation.  The ``NEW``
+behavior is to issue an error instead of a warning.
+
+.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 2.6.0
+.. |WARNS_OR_DOES_NOT_WARN| replace:: warns
+.. include:: STANDARD_ADVICE.txt
 
 .. include:: DEPRECATED.txt