JOSS: Link to doc

[mhubii]

Under about, could you please add the documentation as website? See below

If you could do the same for wbc_ros / wbc_msgs, would be great.

On this topic, in the tutorials, e.g. https://arc-opt.github.io/Documentation/tutorials/vel_introductory_example.html, how does one jump back to the landing page? Can you add a navigation bar easily?

Refers to https://github.com/openjournals/joss-reviews/issues/6696

[dmronga]

Added the link in the about sections.

Navigation bar is not so easy, but I added links at the bottom of each tutorial to navigate through the tutorials more easily

[mhubii]

sounds good to me