feat:(Docs) added button when click scroll to top

[19950512]

In my opinion, this feature is very useful because the documentation on some pages has a lot of content and when necessary, you need to scroll a lot to go back to the top.

I'm not familiar with Laravel or this type of project/structure, but I believe this button/idea is useful for documentation.

Maybe implement it in another, more "elegant" way... The important thing is that it has the functionality, it could be this code or any other code.

:this is my first time a sent PR: