Missed a change

Author: ismailmustafa

README.md

@@ -13,7 +13,7 @@ $ git clone https://github.com/haskell/haskell-ide-engine --recursive
 $ cd haskell-ide-engine && make build-all
 ```
 
-Alternatively you can just `stack install`, but `make build` will give you the best setup.
+Alternatively you can just `stack install`, but `make build-all` will give you the best setup.
 
 ## Features