Fix Change Log comment line.

lisp/completion.el

@@ -214,7 +214,7 @@
 ;;
 ;;
 ;;-----------------------------------------------
-;; Change Log:
+;;; Change Log:
 ;;-----------------------------------------------
 ;;    Sometime in '84 Brewster implemented a somewhat buggy version for 
 ;; Symbolics LISPMs.

lisp/mail/mh-e.el

@@ -54,7 +54,7 @@
 ;; (global-set-key "\C-xm" 'mh-smail)
 ;; (global-set-key "\C-x4m" 'mh-smail-other-window)
 
-;; Change Log:
+;;; Change Log:
 
 ;; Original version for Gosling emacs by Brian Reid, Stanford, 1982.
 ;; Modified by James Larus, BBN, July 1984 and UCB, 1984 & 1985.

lisp/mail/rnewspost.el

@@ -22,7 +22,7 @@
 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 ;; Boston, MA 02111-1307, USA.
 
-;; Change Log:
+;;; Change Log:
 
 ;; moved posting and mail code from rnews.el
 ;;	tower@prep.ai.mit.edu Wed Oct 29 1986

lisp/time-stamp.el

@@ -45,7 +45,7 @@
 
 ;; See the documentation for the function `time-stamp' for more details.
 
-;; Change Log:
+;;; Change Log:
 
 ;; Originally based on the 19 Dec 88 version of
 ;;   date.el by John Sturdy <mcvax!harlqn.co.uk!jcgs@uunet.uu.net>