Update runtime files
diff --git a/runtime/doc/mbyte.txt b/runtime/doc/mbyte.txt
index 41e42a2..7a5cca3 100644
--- a/runtime/doc/mbyte.txt
+++ b/runtime/doc/mbyte.txt
@@ -1,4 +1,4 @@
-*mbyte.txt* For Vim version 8.2. Last change: 2020 Aug 15
+*mbyte.txt* For Vim version 8.2. Last change: 2021 Apr 05
VIM REFERENCE MANUAL by Bram Moolenaar et al.
@@ -770,7 +770,7 @@
of the two ways: FrontEnd system and BackEnd system. In the FrontEnd
system, input events are snatched by the |IM-server| first, then |IM-server|
give the application the result of input. On the other hand, the BackEnd
- system works reverse order. MS Windows adopt BackEnd system. In X, most of
+ system works reverse order. MS-Windows adopt BackEnd system. In X, most of
|IM-server|s adopt FrontEnd system. The demerit of BackEnd system is the
large overhead in communication, but it provides safe synchronization with
no restrictions on applications.