Update C# example of tween_method with a parameter to the lambda method

[viksl]

• Closes Tween's tween_method has incorrect C# example which causes errors. godot-docs#7738

In the C# example the lambda method is missing a parameter which causes an error since the tween_method expects a method with a pass in parameter, this updates the documentation to reflect that and also uses the parameter in the lambda to match the GDScript example.

I hope I haven't messed anything, it's my first PR so please have mercy.

[viksl]

@RedworkDE thanks for the suggestion, the original comment felt a bit off so I just tried to suggest something but honestly wasn't sure what to do with it either heh. Is there anything I need to do now, please? I'm not familiar with this process.

[RedworkDE]

Check https://github.com/godotengine/godot/blob/master/CONTRIBUTING.md and its linked docs pages for more general information about contributing.

You need to squash the two commits into one by following these instructions: https://docs.godotengine.org/en/latest/contributing/workflow/pr_workflow.html.

[viksl]

@RedworkDE Thanks, I tried to follow it but I'm not sure if it's ok like this or if I messed something up? Really thank you for your time.

[RedworkDE]

It's good now.

[YuriSizov]

Thanks! And congrats on your first merged Godot PR!