docs: Update TSC representative for Microsoft

TSC representative for Microsoft has changed recently.
Modify list of TSC members to reflect the change.

Change-Id: I178dcbeffb3433248cb12695eb1bde6dc16659f3
Signed-off-by: Sagar Dharia <sagar.dharia@microsoft.com>
diff --git a/README.md b/README.md
index 57be134..f118b67 100644
--- a/README.md
+++ b/README.md
@@ -76,5 +76,5 @@
  * Nancy Yuen, Google
  * Sai Dasari, Facebook
  * James Mihm, Intel
- * Ali Larijani, Microsoft
+ * Sagar Dharia, Microsoft
  * Supreeth Venkatesh, Arm