Fix Sphinx releases plugin identification of bugs/features

Author: jb3

docs/changelog.rst

@@ -5,13 +5,13 @@ Changelog
 =========
 
 - :release:`11.7.0 <10th August 2025>`
-- :bug:`304` Update Discord invite regex to handle new protocol.
+- :bug:`304 major` Update Discord invite regex to handle new protocol.
 
 - :release:`11.6.1 <13th July 2025>`
 - :bug:`303` Update Discord invite regex to handle cases with additional slashes.
 
 - :release:`11.6.0 <18th February 2025>`
-- :bug:`302` Bump Discord.py to :literal-url:`2.5.0 <https://discordpy.readthedocs.io/en/stable/whats_new.html#v2-5-0>`.
+- :bug:`302 major` Bump Discord.py to :literal-url:`2.5.0 <https://discordpy.readthedocs.io/en/stable/whats_new.html#v2-5-0>`.
 
 
 - :release:`11.5.1 <23rd November 2024>`