[Docsy] Upgrade to v0.10.0-22-g2295188b

[chalin]

• Upgrades Docsy to v0.10.0-22-g2295188b
• There are no significant changes to the generated files, other than updates due to the new version of FontAwesome:

  $ (cd public && git diff -bw --ignore-blank-lines) | grep ^diff                 
  diff --git a/scss/main.css b/scss/main.css
  diff --git a/scss/main.css.map b/scss/main.css.map
  diff --git a/site/index.html b/site/index.html