Version 9 of Highlight.js has reached EOL and is no longer supported

[hans-thomas]

Hi, i get this error when i run dockpress to build the project.

> docpress build
Version 9 of Highlight.js has reached EOL and is no longer supported.
Please upgrade or ask whatever dependency you are using to upgrade.
https://github.com/highlightjs/highlight.js/issues/2877
Could not find the language '', did you forget to load/include a language module?
Could not find the language '', did you forget to load/include a language module?
Could not find the language '', did you forget to load/include a language module?
Could not find the language '', did you forget to load/include a language module?
Could not find the language '', did you forget to load/include a language module?

i think it's related to this error. docpress-core/pull/210