Update contact information for Team page

[jennaswa]

Per the discussion in #397, the main purpose of this PR is to:

• List [email protected] as a general contact email, and
• Link github profiles to listed team members

In addition, this would provide a good opportunity to update team members in preparation for our first upcoming R&R review, as decided in the Aug 20 business meeting. Namely:

• Could all @MDAnalysis/coredevs please briefly review what teams you are listed for and make any necessary updates?
• I (@jennaswa) am currently the only listed team member for "Community Engagement". However, in the way we have defined the Community Engagement role, I feel others are actually doing this work rather than me (e.g., @hmacdope, @orbeckst, @IAlibay, @RMeli, @yuxuanzhuang, @richardjgowers). Please add your names if you agree.
• Similarly, @IAlibay, as you are doing the majority of the metric tracking (and have tentatively volunteered to help with meetings during my leave), would you like to be listed for the Project Org & Mgmt role?
• @yuxuanzhuang - this seems the perfect opportunity to please add your name to roles you are currently taking on/interested in staying/getting involved with :)

Thanks!

[IAlibay]

Thanks @jennaswa !

I will opt out of including myself in community engagement, but will opt in for project organization.

Re: the build failure, I suspect the autogeneration from yaml might not like the links so much. @lilyminium would be best suited to weigh in on this.

[lilyminium]

Re: github failure -- yup, I hadn't included Markdown support in the teams pages. I've opened #403 to include this so that should fix it. However, the caveat is that the initial YAML still has to be valid, so all the team member links should be encapsulated in quotes to tell YAML it's a string and not a list. (i.e. "[Jenna Swarthout Goddard](https://github.com/jennaswa)" instead of just plain [Jenna Swarthout Goddard](https://github.com/jennaswa))

[lilyminium]

Added non-blocking comments for quotes. Otherwise LGTM -- thanks for this @jennaswa!