\grantsponsor example suggests global SponsorID while it is just a user-chosen ID

[andreasabel]

From the example given for \grantsponsor I got the impression that I have to hunt for a global ID for my grant provider:

acmart/acmart.dtx

Lines 1626 to 1633 in 9e0908c

	% The authors would also like to thank the anonymous referees for
	% their valuable comments and helpful suggestions. This work is
	% supported by the \grantsponsor{GS501100001809}{National Natural
	% Science Foundation of
	% China}{https://doi.org/10.13039/501100001809} under Grant
	% No.:~\grantnum{GS501100001809}{61273304}
	% and~\grantnum[http://www.nnsf.cn/youngscientists]{GS501100001809}{Young
	% Scientists' Support Program}.

However it has been clarified in the fix of #71 that this is just an ID the user can choose themselves:

acmart/acmart.dtx

Lines 1615 to 1618 in 9e0908c

	% At present \marg{sponsorID} is chosen by the authors and can be an
	% arbitrary key in the same way the label of a \cs{cite} is arbitrarily
	% chosen. There might be a change to this policy if the ACM decides to
	% create a global database of sponsoring organizations.

It would be clearer (esp. to the sloppy reader) if the example was updated to use a ID that looks user-chosen (like my-sponsor). It currently looks global (GS501100001809).

Re:

• unique ID for \grantsponsor, \grantnum #71