Update runtime files.
diff --git a/runtime/doc/autocmd.txt b/runtime/doc/autocmd.txt
index f15cd96..a540704 100644
--- a/runtime/doc/autocmd.txt
+++ b/runtime/doc/autocmd.txt
@@ -1,4 +1,4 @@
-*autocmd.txt* For Vim version 8.2. Last change: 2020 Sep 25
+*autocmd.txt* For Vim version 8.2. Last change: 2020 Oct 26
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -278,7 +278,7 @@
|BufWinLeave| before a buffer is removed from a window
|BufUnload| before unloading a buffer
-|BufHidden| just after a buffer has become hidden
+|BufHidden| just before a buffer becomes hidden
|BufNew| just after creating a new buffer
|SwapExists| detected an existing swap file
@@ -883,7 +883,7 @@
string.
*InsertLeavePre*
InsertLeavePre Just before leaving Insert mode. Also when
- using CTRL-O |i_CTRL-O|. Be caseful not to
+ using CTRL-O |i_CTRL-O|. Be careful not to
change mode or use `:normal`, it will likely
cause trouble.
*InsertLeave*