Add flux commands examples

[TobiasNx]

Add examples for Flux Commands

@maipet Examples for Fix Functions should be added in a similar way also missing examples for Flux Commands but no logging functions (since #141 us not solved yet)

[TobiasNx]

@katauber can you identify which workflows fail?

[katauber]

If you run lein test locally, you can see which workflows fail (I think in the Github Actions, the order of logs is a little bit mixed up).
E.g.:

Here you can see, that às_formeta_records` throws the following error.

I'll add the PR to the Metafacture Project and set a status so I have a better overview, what my tasks are.

[katauber]

For this first example there is something wrong with the link format:

There's a second example where only should be a PG link.

[TobiasNx]

I added a couple of fix functions too. One test files because of #145

[katauber]

Deployed to https://test.metafacture.org/playground/

[katauber]

Deployed to https://metafacture.org/playground/