Update Wikipedia link

Author: kbdharun

topics/tldr/index.md

@@ -8,6 +8,6 @@ released: 8 December 2013
 related: manpages, documentation, cheatsheets
 topic: tldr
 url: https://tldr.sh
-wikipedia_url: https://en.wikipedia.org/wiki/Flatpak
+wikipedia_url: https://en.wikipedia.org/wiki/TLDR_Pages
 ---
 The tldr-pages project is a collection of community-maintained help pages for command-line tools, that aims to be a simpler, more approachable complement to traditional man pages.