Add some Computer Networks courses (#394)

* Add UIUC ECE/CS 438 (FA20)

* Add ETH Zürich Advanced Topics in Communication Networks (FA22)

README.md

@@ -678,6 +678,7 @@ Table of Contents
 - [Computer Networks, Tanenbaum, Wetherall Computer Networks 5e - Video Lectures](http://media.pearsoncmg.com/ph/streaming/esm/tanenbaum5e_videonotes/tanenbaum_videoNotes.html)
 - [CSEP 561 - PMP Network Systems, Fall 2013 - University of Washington](https://courses.cs.washington.edu/courses/csep561/13au/) ([Videos](https://courses.cs.washington.edu/courses/csep561/13au/video/))
 - [CSEP 561 – Network Systems, Autumn 2008 - University of Washington](https://courses.cs.washington.edu/courses/csep561/08au/) ([Videos](https://courses.cs.washington.edu/courses/csep561/08au/lectures/))
+- [ECE/CS 438 - Communication Networks, Fall 2020 - UIUC](https://courses.physics.illinois.edu/cs438/fa2020/)
 - [Computer Networks - IIT Kharagpur](https://nptel.ac.in/courses/106105081/)
 - [Introduction to Data Communications 2013, Steven Gordon - Thammasat University, Thailand](https://www.youtube.com/playlist?list=PLvifRcqOOwF8u4iC7hFTMVC_WD6SEpnkx)
 - [Introduction to Complex Networks - RIT](https://www.youtube.com/playlist?list=PLE9AAD550EA21F3DC)
@@ -696,6 +697,7 @@ Table of Contents
 - [Internetworking with TCP/IP by Prof. Dr. Christoph Meinel - HPI](https://www.youtube.com/playlist?list=PLoOmvuyo5UAfY5VrkObHTckZHwPsS1VCA)
 - [CS798: Mathematical Foundations of Computer Networking - University of Waterloo](https://www.youtube.com/playlist?list=PLFB088DB91845CA34)
 - [CS 168 Introduction to the Internet: Architecture and Protocols, Fall 2022 - UC Berkeley](https://fa22.cs168.io/) ([YouTube](https://www.youtube.com/playlist?list=PLIygTcviGPKD4RbcpiXKeyXrIImw-mGd-))
+- [Advanced Topics in Communication Networks, Fall 2022 - ETH Zürich](https://video.ethz.ch/lectures/d-itet/2022/autumn/227-0575-00L.html)
 
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