Update Project Profile Adding Nilakshi Sahai (#7714)

* added Nilakshi Sahai to project team as a leadership

* Update _projects/tdm-calculator.md

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Co-authored-by: Bonnie Wolfe <[email protected]>

Author: belunatic

_projects/tdm-calculator.md

@@ -48,6 +48,13 @@ leadership:
       slack: 'https://hackforla.slack.com/team/U01RDSRT46R'
       github: 'https://github.com/Jane4925'
     picture: https://avatars.githubusercontent.com/Jane4925
+  - name: Nilakshi Sahai
+    github-handle: NilakshiS
+    role: UX Design Lead
+    links:
+      slack: https://hackforla.slack.com/team/U06SYVD69L7
+      github: https://github.com/NilakshiS
+    picture: https://avatars.githubusercontent.com/NilakshiS
   - name: Heejung Hong
     github-handle: heejung-hong
     role: Front End Development Lead