fix(emacs-lisp): 'multiple snippets with same identity' warnings

Fixes 'Multiple snippets with same identity: "y-or-n-p"' warnings when
loading yasnippet.

Author: hlissner

emacs-lisp-mode/yes-or-no-p

@@ -1,5 +1,5 @@
 # -*- mode: snippet -*-
-# name: y-or-n-p
+# name: yes-or-no-p
 # key: yesno
 # --
 (yes-or-no-p "$1")