Put overridable function docstrings on multiple lines.

Having them as one single line not only looks bad, it messes up PDF output since no line breaks are applied in code.

tutorials/step_by_step/scripting_continued.rst

@@ -123,25 +123,41 @@ many useful overrideable functions, which are described as follows:
 ::
 
     func _enter_tree():
-        pass # When the node enters the _Scene Tree_, it become acive and  this function is called. Children nodes have not entered the active scene yet. In general, it's better to use _ready() for most cases.
+        # When the node enters the _Scene Tree_, it become active 
+        # and  this function is called. Children nodes have not entered 
+        # the active scene yet. In general, it's better to use _ready() 
+        # for most cases.
+        pass
 
     func _ready():
-        pass # This function is called after _enter_tree, but it ensures that all children nodes have also entered the _Scene Tree_, and became active.
+        # This function is called after _enter_tree, but it ensures 
+        # that all children nodes have also entered the _Scene Tree_, 
+        # and became active.
+        pass 
 
     func _exit_tree():
-        pass # When the node exists the _Scene Tree_, this function is called. Children nodes have all exited the _Scene Tree_  at this point and all became inactive.
+        # When the node exists the _Scene Tree_, this function is called. 
+        # Children nodes have all exited the _Scene Tree_  at this point 
+        # and all became inactive.
+        pass
 
     func _process(delta):
-        pass # When set_process() is enabled, this is called every frame
+        # When set_process() is enabled, this function is called every frame.
+        pass
 
     func _fixed_process(delta):
-        pass # When set_fixed_process() is enabled, this is called every physics frame
+        # When set_fixed_process() is enabled, this is called every physics 
+        # frame.
+        pass
 
     func _paused():
-        pass # Called when game is paused, after this call, the node will not receive any more process callbacks
+        # Called when game is paused. After this call, the node will not receive 
+        # any more process callbacks.
+        pass
 
     func _unpaused():
-        pass # Called when game is unpaused   
+        # Called when game is unpaused.
+        pass
 
 Creating nodes
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