Change in coreboot[master]: docs/contributing/gsoc: Add a collection of useful GSoC links

[Felix Singer (Code Review)]

Attention is currently required from: Martin Roth, David Hendricks, Anastasia Klimchuk.
Felix Singer has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62660 )

Change subject: docs/contributing/gsoc: Add a collection of useful GSoC links
......................................................................

Patch Set 5:

(1 comment)

File Documentation/contributing/gsoc.md:

https://review.coreboot.org/c/coreboot/+/62660/comment/f4969cbd_5a26f22c 
PS3, Line 5:   * [Timeline][GSoC Timeline]
> Just to check, this is side-menu, and another diff below is bottom-menu? […]

Yes, this also will be shown in the side-menu like this:

* [...]
  * Collection of official GSoC guides & documents
    * Timeline
    * Roles and Responsibilities
    * [...]
  * [...]

The sub-items (Timeline, Roles and Responsibilities, ...) don't contain a single character which isn't a link. In this case, the generator adds these points to the ToC tree. That's not intended by me, but I couldn't find a solution which doesn't add these points to the ToC tree. I will try to investigate that more later.