Fix `org-planning-or-clock-line-re' regexp

* lisp/org.el (org-set-regexps-and-options): Fix
  `org-planning-or-clock-line-re' regexp.  Indeed "\\>" will never
  match since time keywords must end with colons, which are not word
  constituent.

lisp/org.el

@@ -4789,10 +4789,11 @@ but the stars and the body are.")
 		    "\\|" org-clock-string "\\)\\)?"
 		    " *\\([[<][0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} ?[^]\r\n>]*?[]>]\\|<%%([^\r\n>]*>\\)")
 	    org-planning-or-clock-line-re
-	    (concat "\\(?:^[ \t]*\\(" org-scheduled-string
-		    "\\|" org-deadline-string
-		    "\\|" org-closed-string "\\|" org-clock-string
-		    "\\)\\>\\)")
+	    (concat "^[ \t]*\\("
+		    org-scheduled-string "\\|"
+		    org-deadline-string "\\|"
+		    org-closed-string "\\|"
+		    org-clock-string "\\)")
 	    org-all-time-keywords
 	    (mapcar (lambda (w) (substring w 0 -1))
 		    (list org-scheduled-string org-deadline-string