Consider changing most if not all instances of `conformance checking` to `conformance check`

[TallTed]

As observed in #408 (comment), I think most if not all instances of conformance checking should become conformance check, throughout the document(s).

This will require a human review, to ensure that a change all doesn't change any that should be conformance checking. I would be happy to perform this review, if someone can initiate a PR that does such a global search-and-replace.

Originally posted by @TallTed in #408 (comment)

[afs]

It appears that it is "conformance checking" in running text and could be changed in some definitions although it is OK at the moment.

The first use is

Conformance checking is a simplified version of validation

so that shows that some should not change or needs "A conformance check ...".

The second is

Validation and conformance checking can result in a failure.

Same situation.

I did find:

For each value node v: A failure MUST be produced if the conformance checking of v against $node produces a failure.

which could be changed but reads OK currently.

Where should it be definitely be changed to "conformance check"? That is the human task.

[HolgerKnublauch]

Like the formatting of tabs-vs-spaces issue, I wouldn't be in favor of doing nice-to-have changes that were not a problem in SHACL 1.0 either. Our editing bandwidth is limited and there need to be strong reasons for this extra workload.

[TallTed]

I'm happy enough to do the "conformance checking" search and produce a PR as relevant. It's OK with me if it turns into a bunch of conflict resolution. GitHub's presentation is often sufficient, and when it's not, I have a good side-by-side editing process.

Similar with the spaces-vs-tabs, though I'd rather leave this as an open issue until near CR and then address it as a linting effort, which might result in some number of PRs turning into conflict resolution jobs, but by that point, the number of in-flight PRs should be low, and so there shouldn't be much conflict resolution to handle. This change will make future editing easier, to a degree I think worth the effort.