Update gem

Gemfile

@@ -7,7 +7,7 @@ source "https://rubygems.org"
 #
 # This will help ensure the proper Jekyll version is running.
 # Happy Jekylling!
-gem "jekyll", "~> 4.1.1"
+gem "jekyll", "~> 4.2.0"
 # This is the default theme for new Jekyll sites. You may change this to anything you like.
 
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and

_config.yml

@@ -36,8 +36,6 @@ author:
 collections:
   posts:
     excerpt_separator: <!--more-->
-    
-  
 
 
 markdown:         kramdown

ntnu/21v/ttk4145/summary/summary.md

@@ -472,7 +472,7 @@ t1(){                           t2(){
 * "Limited expressive power". Some reasonalbe problems are hard to solve
   * Ref ["The Little Book of Semaphores"](https://greenteapress.com/semaphores/LittleBookOfSemaphores.pdf)
 
- ### Why shared-variable synchronization
+### Why shared-variable synchronization
 
 **Why not?**
 
@@ -504,4 +504,6 @@ t1(){                           t2(){
 * Sensors and actuators
 * "CPU" - Computing capacity 
   * *This* is real-time programming; We solve it by *Scheduling*
-* ... any other interface
+* ... any other interface
+
+