patch 8.2.4511: filetype test fails

Problem:    Filetype test fails.
Solution:   Change "endw" to "endwhile".
diff --git a/src/version.c b/src/version.c
index 3766c11..6e337b4 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4511,
+/**/
     4510,
 /**/
     4509,