The addition of my user. (#1108)

Completed.

Author: tvr-hmcts

slack.json

@@ -3851,6 +3851,10 @@
     {
       "github": "srinijg",
       "slack": "U09B0P9D3GA"
+    },
+    {
+      "github": "tvr-hmcts",
+      "slack": "U09DXJMC857"
     }
   ]
 }