updates changelog

docs/src/content/docs/getting-started/changelog.md

@@ -2,6 +2,19 @@
 title: Changelog
 description: What changed in the last patch?
 ---
+## v0.13.1
+
+### Features
+- Improves loading speed of the home page
+- Improves server side rendering of certain components
+
+### Translations
+- Various additions across multiple languages (thanks to all contributers)
+
+### Bug fixes
+- Fixes a bug that hid the map on some sites on mobile devices
+- Fixes responsive layouts on mobile devices
+
 ## v0.13.0
 ### Features
 - Adds a profile page with timeline, trails and stats of the respective user