Enforce GDScript and C# dictionary spacing style guidelines in code samples

[ProgrammerOnCoffee]

Both the GDScript and the C# style guides state that a space should be added after opening braces and before ending braces in single-line dictionary declarations. This PR enforces that guideline in various code samples.

This PR does not change the style of the following:

• Dictionaries passed to functions (e.g. foo({"some_key": "bar"}))
• Single-line dictionary arrays (e.g. [{"godot": true}])

Resolved

[Mickeon]

I... this is going to be real nasty for translators.
I am not necessarily against it. I just think that if we decide on something it's got to be agreeable. I for one don't really like the extra padding this style gives to nested dictionaries, but I get it. It's in the style guide, so it makes sense.

[ProgrammerOnCoffee]

I'd be happy to close this if it would cause issues.

[Mickeon]

It's actually not that invasive in hindsight. However, we need to argue about... nested dictionaries in a single line, because that's not explicitly mentioned in the style guide.

[AThousandShips]

I'd say that nested dictionaries are covered by the style guide, if it was an exception it should have been mentioned, otherwise it applies by induction

Minor detail

[Repiteo]

Thanks!