Update README.md

Author: Gabriele Torini

README.md

@@ -5,8 +5,8 @@ A GDScript implementation of a behavior tree for game AI, based on native Godot
 
 To try out the example, copy the example folder into your project and run the 'agent.tscn' scene. To see how the behavior tree is built, check the "ex_behavior_tree.tscn" scene.
 
-[https://raw.githubusercontent.com/GabrieleTorini/godot-behavior-tree/main/images/Screenshot%202021-03-13%20085615.png]
-[https://raw.githubusercontent.com/GabrieleTorini/godot-behavior-tree/main/images/Screenshot%202021-03-13%20085633.png]
+[(https://raw.githubusercontent.com/GabrieleTorini/godot-behavior-tree/main/images/Screenshot%202021-03-13%20085615.png)]
+[(https://raw.githubusercontent.com/GabrieleTorini/godot-behavior-tree/main/images/Screenshot%202021-03-13%20085633.png)]
 
 INSTRUCTIONS:
 - Copy files in a folder in your project. May have to restart the editor.