PEP 1: Update language on PEP-Delegate field

[willingc]

This PR is a revision of the closed PR #1445.

[willingc]

@brettcannon @warsaw This was a PEP change that our earlier Steering Council decided would be helpful. Unfortunately the earlier PR got stale. Let's approve and merge this one 😄

[AA-Turner]

Looks good

Three very minor suggestions (tense and commas), feel free to ignore though

[warsaw]

Thanks @willingc and @AA-Turner !

[CAM-Gerlach]

Seems like the PR was merged before I hit submit on this review, but I can open another PR to refine the wording

[CAM-Gerlach]

Suggested change

	the PEP-Delegate for that PEP, and they will then have the
	authority to approve (or reject) that PEP.
	the PEP-Delegate for that PEP, and if approved by the Steering Council,
	they will then have the authority to approve (or reject) that PEP.

Not sure if this is the proper wording, but I would be explicit here to clarify that the SC has to approve their offer, it isn't automatic upon offering (as the text here seems to imply).

[CAM-Gerlach]

Suggested change

	The term "PEP-Delegate" is used under the Steering
	Council governance model. The PEP's designated decision maker,
	the "PEP-Delegate" with the Steering Council's support, is
	recorded in the "PEP-Delegate" field in the PEP's header. For
	The term "PEP-Delegate" is used under the Steering Council governance model
	for the PEP's designated decision maker, as accepted by the Steering Council,
	and recorded in the "PEP-Delegate" field in the PEP's header. For

I found the wording here a little choppy, redundant and hard to parse, and suggest a bit of a restructuring to improve this.

[CAM-Gerlach]

Suggested change

	PEPs written prior to the Steering Council's governance model, the field name
	PEPs written prior to the Steering Council governance model, the field name

Nitpick, but the possessive implies that the Steering Council created the governance model, as opposed to itself being the name of the governance model itself

[CAM-Gerlach]

Suggested change

	The terms PEP-Delegate and BDFL-Delegate may be used interchangeably in
	discussion. PEP-Delegate is the preferred term under the Steering Council
	governance model.
	The term "BDFL-Delegate" is a legacy alias for PEP-Delegate, stemming from
	the time when Python was led by a BDFL, but otherwise has the same meaning.

This emphasizes that BDFL-Delegate is a legacy alias and explains its origin, while being simpler and more direct and with less choppiness.

[CAM-Gerlach]

Suggested change

	Individuals taking on this responsibility are free to seek
	Those taking on this responsibility are free to seek

Avoid repetition

[warsaw]

I already merged this PR. I'd rather not revert. Can you create a new one with any follow up changes?

[CAM-Gerlach]

Yeah sure—I was going to go ahead with another PR; just wanted to wait to see if anyone objected. Thanks!