(gnus-score-lower-thread): Don't quote nil and t in docstrings.

diff --git a/lisp/gnus/gnus-score.el b/lisp/gnus/gnus-score.el
index 1de3b48e5f5fac915bb06415bc80d788228fcd26..997d3b04274d0d39d27a8be9f1bdccbb1abddf49 100644 (file)
--- a/lisp/gnus/gnus-score.el
+++ b/lisp/gnus/gnus-score.el
@@ -1495,7 +1495,7 @@ EXTRA is the possible non-standard header."
   "Lower the score on THREAD with SCORE-ADJUST.
 THREAD is expected to contain a list of the form `(PARENT [CHILD1
 CHILD2 ...])' where PARENT is a header array and each CHILD is a list
-of the same form as THREAD.  The empty list `nil' is valid.  For each
+of the same form as THREAD.  The empty list nil is valid.  For each
 article in the tree, the score of the corresponding entry in
 `gnus-newsgroup-scored' is adjusted by SCORE-ADJUST."
   (while thread