docs: update MAINTAINERS.yaml file with isTscMember: true for Hari Krishnan (#1661)

Co-authored-by: V Thulisile Sibanda <66913810+thulieblack@users.noreply.github.com>

Author: harikrishnan83

MAINTAINERS.yaml

@@ -762,8 +762,10 @@
 - name: HariKrishnan
   github: harikrishnan83
   twitter: harikrishnan83
-  availableForHire: true
-  isTscMember: false
+  linkedin: harikrishnan83
+  slack: U067JPY0UH5
+  availableForHire: false
+  isTscMember: true
   repos:
     - jasyncapi
   githubID: 126087