Clarify no referencing ref numbers in change notes

Author: webknjaz

docs/changelog-fragments/README.rst

@@ -32,11 +32,14 @@ for the users to understand what it means.
 combined with others, it will be a part of the "news digest"
 telling the readers **what changed** in a specific version of
 the library *since the previous version*. You should also use
-RST syntax for highlighting code (inline or block), linking
-parts of the docs or external sites.
-At the end, sign your change note by adding ``-- by
-:user:`github-username``` (replace ``github-username`` with
-your own!).
+*reStructuredText* syntax for highlighting code (inline or block),
+linking parts of the docs or external sites.
+However, you do not need to reference the issue or PR numbers here
+as *towncrier* will automatically add a reference to all of the
+affected issues when rendering the news file.
+If you wish to sign your change, feel free to add ``-- by
+:user:`github-username``` at the end (replace ``github-username``
+with your own!).
 
 Finally, name your file following the convention that Towncrier
 understands: it should start with the number of an issue or a