Merge pull request #21 from doge-gif/docs/fix_official_guide_link

Fix the official guide's link in the readme

Author: legowerewolf

readme.md

@@ -1,6 +1,6 @@
 # Tailscale on the Steam Deck
 
-This process is derived from the [official guide][official-guide], but has been
+This process is derived from the [official guide](https://tailscale.com/blog/steam-deck), but has been
 tweaked to make the process smoother and produce an installation that comes up
 automatically on boot (no need to enter desktop mode).