patch 8.1.2082: some files have a weird name to fit in 8.3 characters

Problem:    Some files have a weird name to fit in 8.3 characters.
Solution:   Use a nicer names.
diff --git a/src/dosinst.h b/src/dosinst.h
index 7cb4139..a83bb08 100644
--- a/src/dosinst.h
+++ b/src/dosinst.h
@@ -7,7 +7,7 @@
  * See README.txt for an overview of the Vim source code.
  */
 /*
- * dosinst.h: Common code for dosinst.c and uninstal.c
+ * dosinst.h: Common code for dosinst.c and uninstall.c
  */
 
 /* Visual Studio 2005 has 'deprecated' many of the standard CRT functions */