add contributor image

Author: tlitfin

_data/CONTRIBUTORS.yml

@@ -153,4 +153,5 @@ Georgie Samaha:
 
 Farah Zaib Khan:
     affiliation: Scientific Business Analyst, The University of Melbourne, Australian BioCommons
-    orcid: 0000-0002-6337-3037
+    orcid: 0000-0002-6337-3037
+    image_url: /images/contributors/Khan_F.jpeg