chore: update new fragment template to include the pr number

Author: BryanttV

changelog.d/20250227_143730_bryann.valderrama_scriv.rst

@@ -1,3 +1,3 @@
 Added
 ~~~~~
-* Migrate to scriv to manage changelog. (by @bryanttv)
+* Migrate to scriv to manage changelog. (by @bryanttv in #472)

changelog.d/scriv/new_fragment.rst.j2

@@ -2,9 +2,11 @@
 
 .. Please respect the following instructions:
 .. * Add a new bullet item for the category that best describes the change.
-.. * You may optionally append "(by @<author>)" at the end of the bullet item,
-..   where @<author> is the GitHub username of the author of the change. These
-..   affiliations will be displayed in the release notes for every release.
+.. * You may optionally append "(by @<author> in #<pr-number>)" at the end of
+..   the bullet item. This will be used to credit the PR author in the bullet
+..   item, where <author> is the GitHub username of the author of the change
+..   and <pr-number> is the PR number of the change. These affiliations will
+..   be displayed in the release notes for every release.
 .. * The accepted categories are: Added, Changed, Deprecated, Removed, Fixed,
 ..   and Security.
 .. * Indicate breaking changes with a "**BREAKING CHANGE:**" prefix in the
@@ -15,27 +17,27 @@
 .. Added
 .. ~~~~~
 .. * Added new ``COURSE_DOWNLOADED_COMPLETED`` event.
-.. * Added support for annotated Python dictionaries as Avro Map type. (by @developer)
+.. * Added support for annotated Python dictionaries as Avro Map type. (by @developer in #1)
 
 .. Changed
 .. ~~~~~~~
 .. * Added support for Python 3.12.
-.. * **BREAKING CHANGE:** Updated from Django 3.x to 4.x. (by @developer)
+.. * **BREAKING CHANGE:** Updated from Django 3.x to 4.x. (by @developer #2)
 
 .. Deprecated
 .. ~~~~~~~~~~
 .. * Deprecated ``COURSE_DOWNLOADED_STARTED`` event
-.. * Deprecated use of non-annotated dictionaries in events. (by @developer)
+.. * Deprecated use of non-annotated dictionaries in events. (by @developer #3)
 
 .. Removed
 .. ~~~~~~~
 .. * Removed support for Python 3.8.
-.. * Removed unused ``COURSE_DOWNLOADED_STARTED`` event. (by @developer)
+.. * Removed unused ``COURSE_DOWNLOADED_STARTED`` event. (by @developer #4)
 
 .. Fixed
 .. ~~~~~
 .. * Fixed event validation in background processes.
-.. * Fixed incorrect handling of event payloads. (by @developer)
+.. * Fixed incorrect handling of event payloads. (by @developer #4)
 
 .. Security
 .. ~~~~~~~~