Update _data/mentors.yml

Co-authored-by: Jennet Turkkan <67760504+jennethydyrova@users.noreply.github.com>

Author: khairahscorner

_data/mentors.yml

@@ -3048,9 +3048,8 @@
     mentee: |
       Somewhere beginner level or mid level that's looking for career guide.
     areas:
-    - Frontend Developer
-    - Fullstack Developer
-    - Frontend Developer
+    - Frontend Development
+    - Fullstack Development
     languages: Javascript
     focus:
     - Grow from beginner to mid-level