patch 8.1.2242: creating docs tags uses user preferences

Problem:    Creating docs tags uses user preferences. (Tony Mechelynck)
Solution:   Add "--clean".
diff --git a/src/version.c b/src/version.c
index c597675..704eee0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -742,6 +742,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2242,
+/**/
     2241,
 /**/
     2240,