beautify new releases

Author: TamaroWalter

CHANGES.md

@@ -1,7 +1,7 @@
 CHANGELOG
 =========
 
-v.5.1-r1 (2025-11-27)
+[v5.1-r1 (2025-11-27)](https://github.com/learnweb/moodle-mod_moodleoverflow/releases/tag/v5.1-r1)
 ---------------------
 Moodleoverflow had a lot of bug fixes as well as code improving changes.
 Here a list of the most important changes:
@@ -10,18 +10,18 @@ Here a list of the most important changes:
 - No more missing activity completion ([#238](https://github.com/learnweb/moodle-mod_moodleoverflow/pull/238))
 - Improved behavior for moving discussions ([#239](https://github.com/learnweb/moodle-mod_moodleoverflow/pull/239), [#241](https://github.com/learnweb/moodle-mod_moodleoverflow/pull/241))
 
-v5.0-r1 (2025-08-01)
+[v5.0-r1 (2025-08-01)](https://github.com/learnweb/moodle-mod_moodleoverflow/releases/tag/v5.0-r1)
 ------------------
 - Fixes Issues [#216](https://github.com/learnweb/moodle-mod_moodleoverflow/issues/216),
                [#211](https://github.com/learnweb/moodle-mod_moodleoverflow/issues/211),
                [#202](https://github.com/learnweb/moodle-mod_moodleoverflow/issues/202)
 - Adaption to Moodle 5.0
 
-4.5.1 (2025-05-19)
+[v4.5-r2 (2025-05-19](https://github.com/learnweb/moodle-mod_moodleoverflow/releases/tag/v4.5-r2)
 ------------------
-[HOTFIX] #214
+- fix for [#214](https://github.com/learnweb/moodle-mod_moodleoverflow/pull/214)
 
-4.5.0 (2025-05-06)
+[v4.5-r1 (2025-05-06)](https://github.com/learnweb/moodle-mod_moodleoverflow/releases/tag/v4.5-r1)
 ------------------
 * Moodle 4.5 compatible version