Update linux installation instructions

Home.md

@@ -27,8 +27,8 @@ Mac:
 - or use [brew](http://brew.sh) and [cask](https://caskroom.github.io): `brew tap caskroom/fonts` and `brew cask install font-fira-code` (not officially supported, might install outdated version)
 
 Linux: 
-- in the ttf folder, double-click each font file, click “Install font”
-- if double-clicking doesn’t work, see [this page](https://github.com/tonsky/FiraCode/wiki/Linux-instructions)
+- install a package available for your distribution following [the instructions](https://github.com/tonsky/FiraCode/wiki/Linux-instructions#installing-with-a-package-manager)
+- or, in the ttf folder double-click each font file and click “Install font”; see [“Manual Installation”](https://github.com/tonsky/FiraCode/wiki/Linux-instructions#manual-installation) if double-clicking doesn't work
 
 ### Troubleshooting