Fix AngProj URL

using the bash command line

for f in $(git ls-files *.adoc); do sed -i s@{ci_server_baseurl}ifs/AngProj@https://gitlab.dev.ifs.hsr.ch/ifs/AngProj@g $f; done

also fix deeplinks to "Überblick" section (ü instead of Ü in https://gitlab.dev.ifs.hsr.ch/ifs/AngProj/-/blob/master/README.md#überblick)