Add Florine's middle name

I use my middle name in publications, and without including it in the
authors list it won't create a link to my bio on the website.

Author: enirolf

_data/authors.yml

@@ -124,8 +124,8 @@ Devajith Valaparambil Sreeramaswamy:
   affiliation : "CERN"
   email       : "[email protected]"
 
-Florine de Geus:
-  name        : "Florine de Geus"
+Florine Willemijn de Geus:
+  name        : "Florine Willemijn de Geus"
   bio         : "Florine joined CERN and the ROOT team as a technical student in November
                  2022 where, as part of the ATLAS experiment, she worked to evaluate and
                  further develop ROOT's new I/O subsystem, RNTuple, so it can be used as