[libadwaita/wip/exalm/docs: 7/8] doc: Add a missing .selection-mode link

[Alexander Mikhaylenko <alexm src gnome org>]

commit 2c9845accedc66a1f16b90b775c41a61ce97c175
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Tue Dec 28 14:47:11 2021 +0500

    doc: Add a missing .selection-mode link

 doc/migrating-between-development-versions.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/doc/migrating-between-development-versions.md b/doc/migrating-between-development-versions.md
index 95e8abcc..41299ca5 100644
--- a/doc/migrating-between-development-versions.md
+++ b/doc/migrating-between-development-versions.md
@@ -351,5 +351,6 @@ button style should be used instead.
 ### Adapt to the `content-view` Check Button Style Removal
 
 The selection mode [class@Gtk.CheckButton] style, used inside views with the
-`.content-view` has been changed into a separate style class `.selection-mode`
-that can be applied directly onto check buttons.
+`.content-view` has been changed into a separate style class
+[`.selection-mode`](style-classes.html#selection-mode-check-buttons) that can be
+applied directly onto check buttons.