Update LabsSymposium2021_Pfanzelter_license

Presentations/Session1_Pfanzelter/LabsSymposium2021_Pfanzelter_license

-The content provided and all its parts are licensed under 
-<a rel="license" href="http://creativecommons.org/licenses/by/4.0/"><img alt="Creative Commons Lizenzvertrag" style="border-width:0" src="https://i.creativecommons.org/l/by/4.0/88x31.png" /></a><br />Dieses Werk ist lizenziert unter einer <a rel="license" href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Namensnennung 4.0 International Lizenz</a>.

Presentations/Session1_Pfanzelter/LabsSymposium2021_Pfanzelter_license.md

+### License Statement
+The presentation provided and all its parts are licensed under a [**creativecommons CC-By 4.0 license**](http://creativecommons.org/licenses/by/4.0/)