Update README.md (lowlighter#194)

Author: qinyihao

source/plugins/achievements/README.md

@@ -11,7 +11,7 @@ The *achievements* plugin displays several highlights about what you achieved on
 
 Achievements are mostly related to features offered by GitHub, so by unlocking achivements ranks you'll be mastering GitHub in no time!
 
-A few achievements contains actual real ranking (based on [GitHub search](github.com/search) results)!
+A few achievements contains actual real ranking (based on [GitHub search](https://github.com/search) results)!
 
 #### ℹ️ Examples workflows
 
@@ -26,4 +26,4 @@ A few achievements contains actual real ranking (based on [GitHub search](github
     plugin_achievements_secrets: yes       # Display unlocked secrets achievements
     plugin_achievements_ignored: octonaut  # Hide octonaut achievement
     plugin_achievements_limit: 0           # Display all unlocked achievement matching threshold and secrets params
-```
+```