patch 8.2.2266: Vim9: it can be hard to see where white space is missing

Problem:    Vim9: it can be hard to see where white space is missing.
Solution:   Mention the text where the error was seen. (closes #7580)
diff --git a/src/version.c b/src/version.c
index 770c1c7..493dece 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2266,
+/**/
     2265,
 /**/
     2264,