Fix hierarchy misspelling

[wisetara]

This came up when I fixed the misspellings in my company's codebase--and spotted this one in one of our modules. So, here's this PR.

Oh, and it looks like my text editor auto-fixed some whitespace stuff, too. For reviewer sanity, the only "real" change is here: https://github.com/amcharts/amcharts3/compare/master...wisetara:hierarchy-anarchy?expand=1#diff-5cc8c9454e453ff1ea1ca07b9989318eR29082

[martynasma]

Thanks @wisetara

pdflib is a 3rd party library, not created or managed by amCharts. We might merge this in, but it owuld creep back in the next time we grab a new version of pdflib.

It's probably best to notify pdfmake crew to make the change:
https://github.com/bpampuch/pdfmake

[wisetara]

@martynasma Oh, thank you for letting me know! I was so hopeful to clear us of this thing. Alas. I'll check that out. Thanks so much.