centos-upgrade-attempt: add python hint

posts: add centos-upgrade-attempt

add source in footer

hp-dock: fix code block language not supported theme

add 2019-09-11-hp-dock

update submodule

fix typo

fix ci

add 2019-08-30-cloud-gaming

fixes

update submodule arch-linux-install

arch-linux-install: match title

add arch-linux-install

update submodule arch-linux-boot-optimize

config: server migration

Revert "ui-text: pagination: use Medium *-Pointing Angle Bracket Ornament"

This reverts commit 40888192f6af0e5c2cba9f86caed40e8a6a19423

ui-text: pagination: use Medium *-Pointing Angle Bracket Ornament

ui-text: pagination: use unicode Angle Quotation Mark

variables: fix noto priority

fix a