It´s pretty easy to add new documentation to this extension.
The only requirement is that the Documentation site must use Algolia DocSearch as their search engine or MkDocs. For Algolia, you can check all availalbe sites here.
The first step is to add an entry to the docsets json file.
The "algolia_index", "algolia_application_id" and "algolia_api_key" properties can be found by inspecting the search request of the original site. For example for VueJS documentation, do a search and look for the following in the "Netowrk tab" of your Browser
For mkdocs based websites you must provide "search_url". You can find it by checking the Network tab in the dev tools of your browser. It should look similar to this: https://www.mkdocs.org/search/search_index.json
You also need to add an icon to the icons/docs folder, whose path should match the one configured in "docset.json" file.
Besides the default docsets.json, this extension also looks for the file ~/.config/ulauncher/ext_preferences/docsearch/docsets.json. You can use this method if you dont want to share your documentation.
The file is exactly the same structure as the default.
It doesnt exist by default, you have to create it manually.
The icon can be placed anywhere in ~/.config/ulauncher/ext_preferences/docsearch directory. You must add the relative path from this directory to your docsets.json file.