Just put the image in Acrobat and OCR it if your typing skills aren't up to par.
I kid, of course. 
On that note, check out the following screenshot. It shows that the problem is still there and uncommenting the base urls was just a work-around:
Text added for @zamboni
yum update
Loaded plugins: changelog, fastestmirror, nethserver_events, presto
Setting up Update Process
Loading mirror speeds from cached hostfile
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
Eg. Invalid release/
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
Eg. Invalid release/
* nethserver-base: mirror1.nethserver.org
* nethserver-updates: mirror1.nethserver.org
No Packages marked for Update