Update gh-pages

[Gianfranco97]

Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our guidelines: Conventional Commit
• [x] Tests for the changes have been added (for bug fixes / features)
• [x] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[x] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

• there is an outdated configuration of Jekyll

• not all the projects of the organization have gh-pages, therefore, the links in the section of "projects" in the project site go to non-existent pages

What is the new behavior?

the Jekyll configuration was updated and the projects that have a project site built were filtered.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

Hi, @ajsb85 With this the branch would be updated