[Docs] Minor issue with "Installation" section

[marcin-rzeznicki]

Docs mention AUR package called haskell-language-server-bin (I know because I added it myself IIRC 😃 ). This package has vanished from AUR (after a long period of inactivity - updates stopped at 1.2.0) but there seems to be a replacement - this time called haskell-language-server-static - I can't help but notice that if it goes like this, after a while we'll run out of package names to recommend to the confused users, but I digress. Should this new package be endorsed in the docs and the old one removed? Thanks in advance

[marcin-rzeznicki]

OK, so the maintainer of this new package replied that his package is indeed a replacement for the old one. I think the docs should be updated then to point to it - I'll issue a PR shortly