Headline of the Richtlinien documents

The headline is to long for the both documents. I recommend the follwoing titel change:

• draft-langenbachSelzer-NFDI4Ing-Guideline_NFDI-RFC_Ideas_Implementation (en)
• draft-langenbachSelzer-NFDI4Ing-Richtlinie_NFDI-RFC_Ideen_Implementierung (de)