fix(docs): point attribution to the docs engine's home

fix(docs): point attribution to oss overview

fix(markdown): restore code containing dollar signs exactly (#289)

fix(links): link strip-mode roots without a trailing slash (#285)

Sourcey 3.6.8

sourcey 3.6.7

sourcey 3.6.6

chore(release): sourcey 3.6.5

chore(release): sourcey 3.6.4

sourcey 3.6.3