Godot: Add a cosmetic empty line after the config_version=3 hint in project.godot

[akien-mga]

Operating system or device - Godot version:
Any OS, master branch.

Issue description:
Godot now saves config_version=3 as a (non mandatory) compatibility hint in project.godot, it looks like this:

config_version=3
[application]

config/name="Platformer"
config/icon="res://icon.png"
run/main_scene="res://stage.tscn"

It would look much cleaner like this:

config_version=3

[application]

config/name="Platformer"
config/icon="res://icon.png"
run/main_scene="res://stage.tscn"

;)

[zatherz]

I think this would look even better:

config_version=3

[application]
config/name="Platformer"
config/icon="res://icon.png"
run/main_scene="res://stage.tscn"

[RichyHBM]

You beat me to it! :)
Was going to mention the misspell in custom_features, wasn't sure if it needed to be part of the same PR as it isn't actually being used yet it seems