Fix Sahar's personal website

Author: RSTZZZ

_data/authors.yml

@@ -266,7 +266,7 @@ Sahar Omidi Shayegan:
   alumni: false
   links:
   - label: Website
-    url: saharshayegan.github.io
+    url: https://saharshayegan.github.io/
   - label: Twitter
     url: https://x.com/sahar_shayegan
   - label: GitHub