Update changelog

CHANGELOG.md

@@ -13,6 +13,7 @@
 - Updated Story apis, move FE to v0 and add v1 for oauth clients ([92654fab](https://github.com/pixelfed/pixelfed/commit/92654fab))
 - Updated robots.txt ([25101901](https://github.com/pixelfed/pixelfed/commit/25101901))
 - Updated mail panel blade view, fix markdown bug ([cbc63b04](https://github.com/pixelfed/pixelfed/commit/cbc63b04))
+- Updated self-diagnosis checks ([03f808c7](https://github.com/pixelfed/pixelfed/commit/03f808c7))
 
 ## [v0.10.8 (2020-01-29)](https://github.com/pixelfed/pixelfed/compare/v0.10.7...v0.10.8)
 ### Added