[libhandy] doc: Use HdyKeypad properties in HdyKeypad migration hints

[Alexander Mikhaylenko <alexm src gnome org>]

commit 719367cb86f22b434a0b73659d5ec3dbdb408ed1
Author: Guido Günther <agx sigxcpu org>
Date:   Wed Sep 9 14:48:30 2020 +0200

    doc: Use HdyKeypad properties in HdyKeypad migration hints
    
    This is not related to the HdyHeaderGroup at all.

 doc/hdy-migrating-0-0-to-1.xml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/doc/hdy-migrating-0-0-to-1.xml b/doc/hdy-migrating-0-0-to-1.xml
index 70b5e156..34649496 100644
--- a/doc/hdy-migrating-0-0-to-1.xml
+++ b/doc/hdy-migrating-0-0-to-1.xml
@@ -316,8 +316,8 @@
       </para>
       <para>
         The “left-action” property has been replaced by
-        #HdyHeaderGroup:start-action, and the “right-action” property has been
-        replaced by #HdyHeaderGroup:end-action.
+        #HdyKeypad:start-action, and the “right-action” property has been
+        replaced by #HdyKeypad:end-action.
       </para>
       <para>
         The “entry” property isn't a #GtkWidget anymore but a #GtkEntry.