Remove the space before comma

This is a fixup of fortran-lang#101.

README.md

@@ -16,8 +16,8 @@ As the prototype matures and we enter production, we will do our best to stay ba
 
 ### Install Haskell
 
-To install **Haskell Stack**, follow these [instructions](https://docs.haskellstack.org/en/stable/install_and_upgrade/)
-, users without superuser (admin) permissions should follow the [manual installation](https://docs.haskellstack.org/en/stable/install_and_upgrade/#manual-download_2) procedure.
+To install **Haskell Stack**, follow these [instructions](https://docs.haskellstack.org/en/stable/install_and_upgrade/),
+users without superuser (admin) permissions should follow the [manual installation](https://docs.haskellstack.org/en/stable/install_and_upgrade/#manual-download_2) procedure.
 
 ### Download this repository