Update _config.yml

Author: lstegner

_config.yml

@@ -18,7 +18,7 @@ author:
   googlescholar    : "https://scholar.google.com/citations?hl=en&authuser=1&user=tyrrNiAAAAAJ"
   researchgate     : "https://www.researchgate.net/profile/Laura-Stegner-2"
   github           : "lstegner"
-  linkedin         : "laura-stegner"
+  linkedin         : "lmstegner"
   orcid            : "https://orcid.org/0000-0003-4496-0727"
   youtube          :
   twitter          : "lmstegner"