OWNERS: update asmitha's contact information

The previous commit (a9694a529eee95904d48f820a165399d689ec0fb) did not
remove sunitha's email and Discord information. This change removes
sunitha's details, adds asmitha's contact information, and sorts the
entries alphabetically.

Change-Id: I22f36efac7b6ef5e85f3b5f7fbba21ccefe73fe7
Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
diff --git a/OWNERS b/OWNERS
index cc10fd0..047c592 100644
--- a/OWNERS
+++ b/OWNERS
@@ -47,15 +47,16 @@
 - name: Adriana Kobylak
   email: anoo@us.ibm.com
   discord: anoo
+- name: Asmitha Karunanithi
+  email: asmitk01@in.ibm.com
+  discord: asmitha
 - name: Ratan Gupta
   email: ratankgupta31@gmail.com
   discord: rgupta
-- name: William Kennington
-  email: wak@google.com
-  discord: wak
-- name: Sunitha Harish
-  email: sunithaharish04@gmail.com
-  discord: Sunitha Harish
 - name: Ravi Teja
   email: raviteja28031990@gmail.com
   discord: raviteja
+- name: William Kennington
+  email: wak@google.com
+  discord: wak
+