Fix special characters in translations

Porkepix and geb in #tor reported   being visible on the update page: https://pix.toile-libre.org/?img=1537965999.png

I ran a script to check if this also happened to other branches of the translation repo: for branch in $(git branch -a|grep remotes/origin|grep -v HEAD|cut -f1); do echo $(basename $branch); git checkout -q $branch; rgrep --exclude-dir=.git ' '; done|less

It was only found in tor-launcher-network-settings_completed. Being on it should we look for other strings as well?