patch 8.2.1252: ":marks" may show '< and '> mixed up

Problem:    ":marks" may show '< and '> mixed up.
Solution:   Show the mark position as where '< and '> would jump.
diff --git a/src/version.c b/src/version.c
index 444870e..89fd043 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1252,
+/**/
     1251,
 /**/
     1250,