Improvements to how hover documentation is shown

[darkdarcool]

• Remove leading spaces from doc comments.

Hover documentation could look off in editors like Neovim with leading spaces in front of comments with a space after the ///. For example:

• Separator between symbol docs and signature.

I also added a separator between the symbol documentation and the signature. This is just a stylistic choice to better separate the two.

[Techatrix]

Locking conversations to prevent further spam comments. I will unlock this when I get to reviewing this PR.