change just the docs config

Author: karel26

docs/Gemfile

@@ -1,5 +1,7 @@
-
 source "https://rubygems.org"
 gem "github-pages", group: :jekyll_plugins
-gem "jekyll-remote-theme"
-gem "webrick", "~> 1.8", group: :development
+gem "jekyll"
+gem "json"
+gem "just-the-docs"
+
+gem "webrick", group: :development

docs/_config.yml

@@ -1,7 +1,7 @@
 repository: Special-K-s-Flightsim-Bots/DCSServerBot
 title: DCSServerBot
 description: A Python tool to manage DCS-servers via Discord
-remote_theme: just-the-docs/just-the-docs
+theme: just-the-docs
 color_scheme: dcsserverbot
 
 gh_edit_link: true
@@ -33,6 +33,3 @@ aux_links:
   GitHub: https://github.com/Special-K-s-Flightsim-Bots/DCSServerBot
   Discord: https://discord.gg/h2zGDH9szZ
   Patreon: https://www.patreon.com/DCS_SpecialK
-
-plugins:
-  - jekyll-remote-theme