Rename SIG ContribStrat --> TAG ContribStrat

[justaugustus]

I've been known to do a little search/replacing in my day, so I'll take this up now that the vote has passed.

Things to think about:

• simple search/replace
• potential link-breaking:
  • repo name (shouldn't break in the case of a single rename): SIG to TAG #100
  • Zoom meetings
  • Calendar things?
  • mailing list
  • website references

cc: @parispittman @jberkus @amye
(FYI and for anything I'm missing off the top of my head)

[amye]

• Zoom meetings
• Calendar things?
• mailing list

These are things that staff can take care of, the only one I have questions on is the website references in netlify.

[jberkus]

@carolynvs so what parts of the website did this just break? Do you need help fixing it?

[carolynvs]

Has everything been transitioned now?

[jberkus]

I think so, can we close this?

[carolynvs]

I think we are done, so say we all!