emacs-28 502788b: Add missing single quotes in the Emacs manual

[Eli Zaretskii]

branch: emacs-28
commit 502788bc3d9cd2f95427114dbb243c62a27edb2b
Author: Jan Synacek <jan.synacek@gmail.com>
Commit: Eli Zaretskii <eliz@gnu.org>

    Add missing single quotes in the Emacs manual
    
    * lisp/mwheel.el (mouse-wheel-scroll-amount): Add missing single
    quotes.  (Bug#51223)
    
    Copyright-paperwork-exempt: yes.
---
 lisp/mwheel.el | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lisp/mwheel.el b/lisp/mwheel.el
index def7758..51410e3 100644
--- a/lisp/mwheel.el
+++ b/lisp/mwheel.el
@@ -103,7 +103,7 @@ less than a full screen.
 If AMOUNT is the symbol 'hscroll', this means that with MODIFIER,
 the mouse wheel will scroll horizontally instead of vertically.
 
-If AMOUNT is the symbol text-scale, this means that with
+If AMOUNT is the symbol 'text-scale', this means that with
 MODIFIER, the mouse wheel will change the face height instead of
 scrolling."
   :group 'mouse