Update style guide for new signal emit/connect syntax

tutorials/scripting/gdscript/gdscript_styleguide.rst

@@ -53,7 +53,7 @@ Here is a complete class example based on these guidelines:
         
 
     func _ready():
-        connect("state_changed", self, "_on_state_changed")
+        state_changed.connect(_on_state_changed)
         _state.enter()
 
 
@@ -840,7 +840,7 @@ in that order.
 
 
     func _ready():
-        connect("state_changed", self, "_on_state_changed")
+        state_changed.connect(_on_state_changed)
         _state.enter()
 
 
@@ -858,7 +858,7 @@ in that order.
         _state.exit()
         self._state = target_state
         _state.enter(msg)
-        player_state_changed.emit(_state.name)
+        Events.player_state_changed.emit(_state.name)
 
 
     func _on_state_changed(previous, new):