patch 9.1.0575: Wrong comments in alt_tabpage()

Problem:  Wrong comments in alt_tabpage()
          (after v9.1.0572)
Solution: Correct the comments (zeertzjq).

closes: #15235

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 25e38ca..c9113e6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    575,
+/**/
     574,
 /**/
     573,