credits: Improve "Thank you for playing!" capitalization

Author: wjt

scenes/menus/title/components/credits.tscn

@@ -923,7 +923,7 @@ size_flags_vertical = 4
 [node name="Title" type="Label" parent="PanelContainer/CreditsContainer/ScrollContainer/ScrollContent/CreditsFooter"]
 layout_mode = 2
 mouse_filter = 1
-text = "Thank you for Playing!"
+text = "Thank you for playing!"
 horizontal_alignment = 1
 
 [node name="TextureRect" type="TextureRect" parent="PanelContainer/CreditsContainer/ScrollContainer/ScrollContent/CreditsFooter"]