[20.7.2] typo in help text

[Karl Heuer]

In GNU Emacs 20.7.2 (i386-debian-linux-gnu, X toolkit)
The `C-h C-h' text contains a sentence with two articles on one noun.
Patch enclosed.

*** lisp/help.el~       Fri Sep  8 08:00:42 2000
--- lisp/help.el        Wed Jan  3 12:57:01 2001
***************
*** 512,516 ****
        it takes you to the Info node for the command bound to that key.
  l  view-lossage.  Show last 100 characters you typed.
! L  describe-language-environment.  This describes either the a
        specific language environment (if you type its name)
        or the current language environment (if you type just RET).
--- 512,516 ----
        it takes you to the Info node for the command bound to that key.
  l  view-lossage.  Show last 100 characters you typed.
! L  describe-language-environment.  This describes either a
        specific language environment (if you type its name)
        or the current language environment (if you type just RET).