Update project.godot files to latest format

gui/rich_text_bbcode/project.godot

@@ -1,10 +1,22 @@
+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+; 
+; Format: 
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
 config_version=3
 
 [application]
 
 config/name="Rich Text Label (BBCode)"
-config/icon="res://icon.png"
 run/main_scene="res://rich_text_bbcode.tscn"
+config/icon="res://icon.png"
+
+[gdnative]
+
+singletons=[  ]
 
 [memory]