Terminology fix

Author: Bozhidar Batsov

README.md

@@ -385,7 +385,7 @@ enable `paredit` in the REPL buffer as well:
 * [ac-nrepl](https://github.com/clojure-emacs/ac-nrepl) provides
   completion source for the popular Emacs interactive auto-completion
   framework [auto-complete](http://cx4a.org/software/auto-complete/).
-  Where nREPL provides it, pop-up documentation for completed symbols
+  Where CIDER provides it, pop-up documentation for completed symbols
   will be displayed.
 
 ## Basic Usage