🎨 Style: change the default icon of social link "Stack Overflow"

CHANGELOG.md

@@ -7,6 +7,7 @@ All notable changes to this project will be documented in this file.
 - :sparkles: Feat: add custom aside template in post page ([#172](https://github.com/hugo-fixit/FixIt/issues/172))
 - :bug: Fix: add function doc2unix to unify new lines symbol between Windows and Unix/Mac OS
 - :bug: Fix: author display error in post and markdown file
+- :art: Style: change the default icons of some social links
 - :globe_with_meridians: Docs(i18n): update pt-br, de in i18n
 - :wrench: Chore: modify babel config and optimize theme.js compilation and loading
 - :wrench: Chore(deps-dev):

assets/data/social.yml

@@ -156,7 +156,7 @@ stackoverflow:
   Prefix: https://stackoverflow.com/users/
   Title: Stack Overflow
   Icon:
-    Class: fa-brands fa-codepen fa-fw
+    Class: fa-brands fa-stack-overflow fa-fw
 
 # 021: 微博
 weibo: