Update README.md

Changed

digitaledition/tlg1396.tlg001.teida-grc1.de.html or digitaledition/tlg1396.tlg001.teida-grc1.de.html

to
 
digitaledition/tlg1396.tlg001.teida-grc1.de.html or digitaledition/stoa0261.stoa001_3.teida-lat1.de.html