patch 9.1.0936: cannot highlight completed text

Problem:  cannot highlight completed text
Solution: (optionally) highlight auto-completed text using the
          ComplMatchIns highlight group (glepnir)

closes: #16173

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/fold.txt b/runtime/doc/fold.txt
index 61f3b67..cf92089 100644
--- a/runtime/doc/fold.txt
+++ b/runtime/doc/fold.txt
@@ -160,7 +160,7 @@
 fold levels on previous lines until an independent fold level is found.
 
 If this proves difficult, the next best thing could be to cache all fold levels
-in a buffer-local variable (b:foldlevels) that is only updated on |b:changedtick|: 
+in a buffer-local variable (b:foldlevels) that is only updated on |b:changedtick|:
 >vim
   vim9script
   def MyFoldFunc(): number