improve formatting and spelling in docs

[ryantm]

hirarchy -> hierarchy and change to hopefully avoid putting a long string of dashes into the haddock output like it is here http://hackage.haskell.org/package/Boolean-0.2.1/docs/Data-Boolean-Numbers.html

[conal]

Thanks for the contribution!

[conal]

Released to Hackage.

[ryantm]

I'm not that familiar with how Hackage releases work, but it looks like maybe something is wrong because there are no links to the module documentation. Perhaps it is still building, or perhaps I messed it up royally. I didn't try building the haddocks after making my changes.

[conal]

Thanks for checking. It usually takes a while (perhaps an hour or two, though I forget) for docs to get generated. Definitely not something you did.

[ryantm]

Thanks for the reassurance, but it has been three days now and there are still no links. Should we start worrying?

Ryan

[ryantm]

@conal Sorry to ping you again, but it looks like it is still broken, and I'm not sure you received a notification from my last comment.

[conal]

Sorry for the delay in replying, and thanks for the extra ping. I was away for a few days for my son's wedding. I also see that the docs are not generating. I wonder if something changed on the Hackage server.

[conal]

@ryantm I just opened Hackage server issue #265, asking about what's going on with documentation building.