Fix mdconvert's link parsing (#209)
Fix mdconvert's link parsing (#209)

The link parsing wasn't working properly -- splitting was limited to
zero 0 splits, so it never actually split at a #. This in turn hid the
call to a non-existent second() function.
JuliaDocs/Documenter.jl,MichaelHatherly/Documenter.jl,MichaelHatherly/Lapidary.jl,mortenpi/Documenter.jl