Update runtime files
diff --git a/runtime/doc/motion.txt b/runtime/doc/motion.txt
index 4412d56..36a7309 100644
--- a/runtime/doc/motion.txt
+++ b/runtime/doc/motion.txt
@@ -1,4 +1,4 @@
-*motion.txt* For Vim version 8.2. Last change: 2021 Dec 13
+*motion.txt* For Vim version 8.2. Last change: 2021 Dec 27
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -788,6 +788,9 @@
*:k*
:[range]k{a-zA-Z'} Same as :mark, but the space before the mark name can
be omitted.
+ This command is not supported in |Vim9| script,
+ because it is too easily confused with a variable
+ name.
*'* *'a* *`* *`a*
'{a-z} `{a-z} Jump to the mark {a-z} in the current buffer.