Increase char count

Test: manual
Fixes: 176998789
Change-Id: I396fb41ed016cc608509200b950b1bc650e6303e
diff --git a/res/values/strings.xml b/res/values/strings.xml
index f52c818..d687357 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -8584,7 +8584,7 @@
     <!-- [CHAR LIMIT=100] preference category title -->
     <string name="recent_conversations">Recent conversations</string>
 
-    <!-- [CHAR LIMIT=20] button title -->
+    <!-- [CHAR LIMIT=40] button title -->
     <string name="conversation_settings_clear_recents">Clear all of the recent ones</string>
 
     <!-- a11y string -->