Externalise Profiling's e.g.s

[nicholascar]

Move all the example Turtle in Profiling to external files to allow content syntax validation.

Closes #926

[ajnelson-nist]

I'd thought we would have self-sufficient Turtle files, rather than files requiring some reconstruction and reformatting to be ingestible RDF. I appreciate that inlining the prefixes in each example would probably make the document pretty busy-looking.

Should the example boxes in the displayed document work when someone copy-pastes the whole box into a new file?

I've had some trouble when learning other languages that have code snippets in HTML documentation focus on the highlights of a coding moment, rather than provide a fully compilable program that just uses comments or something to say "And here's the important part for this documentation page."

All that said, I am happy we have a syntax check now.

[ajnelson-nist]

Confirming - it's OK to have this dependency? I know we're not running this in CI at the moment.

Hm. Should we run this in CI?

[nicholascar]

We might only use this example checking for our doc development and not when the doc is published, so I think it's overkill to automate

[ajnelson-nist]

Ah, apologies, my approval comment went in between you posting this remark and it displaying for me.

I concur.

[ajnelson-nist]

This is good-enough to merge to me. I see one remaining opportunity to add CI, but that probably doesn't need to happen immediately.