Updates Jekyll and changes to kramdown

Author: dpshelio

Gemfile

@@ -1,4 +1,4 @@
 source 'https://rubygems.org'
 
-gem 'jekyll', '~> 3.1.6'
-gem 'redcarpet', '~> 3.5.0'
+gem 'jekyll', '~> 4.2.1'
+gem 'kramdown', '~> 2.3.1'

README.md

@@ -73,7 +73,7 @@ INFO[0001]   ☁  git clone 'https://github.com/helaili/jekyll-action' # ref=v2
 Alternatively, if you want to only run the jekyll build step once you've run the whole action, you can use the official jekyll containers with:
 
 ```bash
-$ docker run --rm --volume="$PWD:/srv/jekyll" --volume="$PWD/vendor/bundle:/usr/local/bundle" -p 4000:4000 -it jekyll/jekyll:3.1.6 jekyll serve
+$ docker run --rm --volume="$PWD:/srv/jekyll" --volume="$PWD/vendor/bundle:/usr/local/bundle" -p 4000:4000 -it jekyll/jekyll:latest jekyll serve
 ```
 
 and open http://localhost:4000/rsd-engineeringcourse (or the link provided).

_config.yml

@@ -20,9 +20,8 @@ crumbs:
   - link: http://www.ucl.ac.uk/isd/services/research-it/training
     text: Training
 
-markdown: redcarpet
-redcarpet:
-  extensions: ["strikethrough","tables"]
+kramdown:
+  hard_wrap: false
 
 
 include: # NOTE: This is not a path, but the directories name, wherever they are