Clarify grammar (fixes MidnightCommander/mc#4827)

Author: zyv

docs/index.md

@@ -11,7 +11,7 @@ GNU Midnight Commander (or `mc`) is a visual, dual-pane file manager. It is rele
 
 Midnight Commander is a feature-rich, full-screen, text-mode application that allows you to copy, move, and delete files and entire directory trees, search for files, and execute commands in the subshell. Internal viewer, editor and diff viewer are included.
 
-`mc` uses versatile text interface libraries such as [ncurses](https://invisible-island.net/ncurses/) or [S-Lang](https://www.jedsoft.org/slang/), which allows it to work on a regular console, inside an X Window terminal, over `ssh` connections, and in all kinds of remote shells.
+`mc` uses versatile text interface libraries such as [ncurses](https://invisible-island.net/ncurses/) or [S-Lang](https://www.jedsoft.org/slang/). This allows it to work on a regular console, inside an X Window terminal, over `ssh` connections, and in all kinds of remote shells.
 
 ![Midnight Commander screenshot](img/mc-screenshot-cropped.png)