patch 9.1.0849: there are a few typos in the source

Problem:  there are a few typos in the source.
Solution: Correct typos (zeertzjq).

closes: #16026

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/Make_mvc.mak b/runtime/doc/Make_mvc.mak
index 5bfe934..a6af4ba 100644
--- a/runtime/doc/Make_mvc.mak
+++ b/runtime/doc/Make_mvc.mak
@@ -10,7 +10,7 @@
 # TODO: to think about what to use instead of awk. PowerShell?
 #AWK =
 
-# Correct the following line for the where executeable file vim is installed.
+# Correct the following line for the where executable file vim is installed.
 # Please do not put the path in quotes.
 VIMPROG = D:\Programs\Vim\vim91\vim.exe