Add docs url for all functions in Glossary page

[lenguyenthanh]

This page is awesome: https://typelevel.org/cats/nomenclature.html. But I think it'll be better if we add docs url to all functions.

For example:

| `F[A] => F[Unit]`  | `void`   |

To

| `F[A] => F[Unit]`  | `[void](https://www.javadoc.io/doc/org.typelevel/cats-docs_2.13/latest/cats/Functor.html#void[A](fa:F[A]):F[Unit])`   |

If this is something we accept, I can work on this.