Link to Pride month posts

[lparsons]

Description

Add link on home page to Pride Month post Add link to Sally Ride post to Pride Month post

Checklist:

• [x] I have previewed changes locally or with CircleCI (runs when PR is created)
• [x] I have completed any content reviews, such as getting input from relevant working groups. If no, please note this and wait to post the PR to the #website channel until the content has been settled.

When you are ready for a technical review/merge, post the for the link for the PR in the US-RSE Slack (#website) to ask for reviewers.

[lparsons]

@exoticDFT Added a link to the home page to our main Pride Month post and a link from that post to the Sally Ride post.

Preview links:

• Home: https://output.circle-artifacts.com/output/job/e87b5090-a01b-473e-aece-cf37392d73ab/artifacts/0/usrse.github.io/index.html
• Pride Month: https://output.circle-artifacts.com/output/job/e87b5090-a01b-473e-aece-cf37392d73ab/artifacts/0/usrse.github.io/2024-06-01-pride-month/index.html