Update slic3r fill patters comments to match slic3r options

[donovan6000]

Thanks! Should it be rectalinear or rectilinear though? I changed them all yesterday to rectilinear based on the spelling in the drop down selection in Slic3r, but I didn't verify if that's the same spelling used in the profiles though.

[ra100]

I must be blind :) of course you are right, I thought I copy-pasted every value, apperenly not. https://github.com/alexrj/Slic3r/blob/3700950474583e6c64163fab848a831cdcfbf44e/xs/src/libslic3r/PrintConfig.cpp#L158

[donovan6000]

Alright, it's all fixed now.