docs(appium): set mkdocs site url to be github pages relative for now
MODIFY
packages/appium/docs/mkdocs-en.yml
packages/appium/docs/mkdocs-en.yml
INHERIT: ./base-mkdocs.yml
-site_url: https://appium.io/docs/en
+site_url: https://appium.github.io/appium/docs/en
edit_uri: edit/2.0/packages/appium/docs/en
site_description: The Appium automation project documentation

MODIFY
packages/appium/docs/mkdocs-ja.yml
packages/appium/docs/mkdocs-ja.yml
INHERIT: ./base-mkdocs.yml
-site_url: https://appium.io/docs/ja
+site_url: https://appium.github.io/appium/docs/ja
edit_uri: edit/2.0/packages/appium/docs/ja
site_description: The Appium automation project documentation

docs(appium): set mkdocs site url to be github pages relative for now