[gnome-build-meta/jjardon/webkit2gtk-4.0_remove] Use yelp branch

[Javier Jardón Cabezas <jjardon src gnome org>]

commit b39803cbd85d7f82fbdde95d7fe246a95aba73af
Author: Javier Jardón <jjardon gnome org>
Date:   Wed Jul 21 22:01:46 2021 +0100

    Use yelp branch

 elements/sdk/yelp.bst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/elements/sdk/yelp.bst b/elements/sdk/yelp.bst
index 0b424090..1729e3d1 100644
--- a/elements/sdk/yelp.bst
+++ b/elements/sdk/yelp.bst
@@ -2,7 +2,7 @@ kind: autotools
 sources:
 - kind: git_tag
   url: gitlab_gnome_org:GNOME/yelp.git
-  track: master
+  track: 40.2-6-g01c6a977b991b0e2e1c467a15aa5c80e35e8b964
 build-depends:
 - sdk/appstream-glib.bst
 - sdk/gtk-doc.bst