Fix inline org links

[tillydray]

closes #8470

Not sure if this is what you want, or even if it fixes it. I'm still building so haven't run the tests yet. But in case I get distracted and forget to come back to this for days, at least there's a PR

[tillydray]

I tested locally and this isn't working as intended. Example

# working as intended
[[hcp-nrsvuebib-0007.xhtml_reader][To the Reader]]

...

# should replace '#' with '_'
<<hcp-nrsvuebib-0007.xhtml#reader>>
# doesn't match the above link at all
[[hcp-nrsvuebib-0005.xhtml_rreader][To the Reader]]

In case it isn't clear and it's relevant, the first line above is on one of the first pages, while the second two lines are next to one another and are over 1,700 lines further down

[tarleb]

LGTM. Could you re-add the old test and add the new one as an extra test?

[tillydray]

@tarleb I'm not sure this PR is correct. The test I removed and the test I added cannot co-exist. Plus my change doesn't fix the problem. I'm hoping someone can give me some direction here