update website link

Author: PBrdng

content/about.md

@@ -15,7 +15,7 @@ description = "The people behind HomotopyContinuation.jl"
 <div class="row">
     <div class="col col-1"></div>
     <div class="col col-4">
-        <h2><a href="http://page.math.tu-berlin.de/~breiding/">Paul Breiding</a></h2>
+        <h2><a href="https://pbrdng.github.io/index.html">Paul Breiding</a></h2>
     </div>
     <div class="col col-2"></div>
     <div class="col col-4">
@@ -31,7 +31,7 @@ description = "The people behind HomotopyContinuation.jl"
         {{<image src="/images/pic_paul.jpg" class="about-image" >}}
     </div>
     <div class="col col-6">
-        <h2><a href="http://page.math.tu-berlin.de/~breiding/">Paul Breiding</a></h2>
+        <h2><a href="https://pbrdng.github.io/index.html">Paul Breiding</a></h2>
     </div>
 </div>
 <div style="margin-top:24px">