Revert "don't say guidance"

This reverts commit 5a6c37d.

Author: woodruffw

source/specifications/well-known-project-urls.rst

@@ -20,8 +20,8 @@ Well-known Project URLs in Metadata
 .. note::
 
     See :ref:`Writing your pyproject.toml - urls <writing-pyproject-toml-urls>`
-    for user-oriented documentation on setting project URL labels in your
-    package's metadata.
+    for user-oriented guidance on choosing project URL labels in your package's
+    metadata.
 
 .. note:: This specification was originally defined in :pep:`753`.