fix label of "Leitlinie / Normschriften"
fix label of "Leitlinie / Normschriften"

jschnasse/regal-api,edoweb/regal-api,edoweb/regal-api,edoweb/regal-api,jschnasse/regal-api,edoweb/regal-api,jschnasse/regal-api,jschnasse/regal-api