patch 8.2.0273: MS-Windows uninstall may delete wrong batch file

Problem:    MS-Windows uninstall may delete wrong batch file.
Solution:   Add specific marker in the generated batch file. (Ken Takata,
            closes #5654)
diff --git a/src/version.c b/src/version.c
index 1008eaf..2fbccd2 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    273,
+/**/
     272,
 /**/
     271,