Update README.md

Co-authored-by: Javier Neira  <atreyu.bbb@gmail.com>

Author: pepeiborra

README.md

@@ -712,7 +712,7 @@ $ cabal update
 $ cabal build
 ```
 
-If you are looking for a Nix expression to create haskell-language-server binaries, seehttps://github.com/haskell/haskell-language-server/issues/122
+If you are looking for a Nix expression to create haskell-language-server binaries, see https://github.com/haskell/haskell-language-server/issues/122
 
 #### Introduction tutorial
 Pepeiborra [wrote an tutorial](https://github.com/pepeiborra/hls-tutorial) on writing a plugin in HLS.