[bug] subdir fix due confused rendering

[mckaygerhard]

from #9 now that mdwiki are defunct i will test this.. the relative link support from @arnaudsm allow to be the file readable from any git implementation..

You are using ROOT for rendering all the things and that's the problem.. and @uli-heller fixed that! your "relative" inplementation is *from root and not from the current place!

case1: using "[Level 2](subdir-01/subdir-02/)" this is the current supported @arnaudsm BUT you miscunderstand, it suppost ONLY IF I AM IN UPPER LEVEL ABOVE OF subdir-01 in current place but due you are using a ROOT global path it's working

case2: using "[Level 2](subfolder-02/)" this is the correct way if were inside https://github.com/arnaudsm/raito/blob/absolute-link-example/subfolder-01/README.md as you can check github renders incorrectly the link and just show: "https://github.com/arnaudsm/raito/blob/absolute-link-example/subfolder-01/subfolder-01/subfolder-02" noted the duplication of "../subfolder-01/subfolder-01/subfol..." at the github..

so that why @uli-heller has right here! -> https://stackoverflow.com/questions/24028561/relative-path-in-html

so i suggest that the changes of the @uli-heller must be implemented, please reopen this issue .. your subdir implementantion are wrong