README: add freifrauvonbleifrei's hp (#3265)

my academic homepage, in case you'd like to link it :)

Author: freifrauvonbleifrei

README.md

@@ -166,6 +166,7 @@ Feel free to add your own page(s) by sending a PR.
 <a href="https://mehrdad-noori.github.io/" target="_blank">★</a>
 <a href="https://arthurclerjon.github.io/" target="_blank">★</a>
 <a href="https://eilamshapira.com/" target="_blank">★</a>
+<a href="https://freifrauvonbleifrei.github.io/" target="_blank">★</a>
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