Add Documentation Link

[quentinlesceller]

Replace GitHub link by "Documentation" link in top bar.

[antiochp]

Do we still have a reasonably prominent link somewhere to github?

[quentinlesceller]

We still have it at the bottom of the page.

[Paouky]

Considering the core team is likely about to become a council managing the fund, maybe we can keep the GitHub link and instead remove the Governance tab?

[0xmichalis]

There is also a link in the Get Started page that should change to point at the new docs site.

[0xmichalis]

Actually there is another one in the Get Started page that can change to https://docs.grin.mw/wiki/services/list-of-services/.

[Paouky]

@Kargakis I have a PR going to modify the Get Started page.

[lehnberg]

Could we find a way to make room for both Docs and Github in the top menu? Arguably two of the most crucial links for us to have.

[quentinlesceller]

Updated to keep both links. Please review @Paouky @lehnberg @Kargakis @antiochp thanks!
Preview:

[Paouky]

Looks good to me. though I do think we eventually want to minimize the number of tabs up there.

[0xmichalis]

Agreed with @Paouky about minimizing the tabs in the future. Maybe Governance can be collapsed into Community.

[lehnberg]

Okay, merging for now, we can iterate on the top bar later, related: #172