docs: adds new maintainers (#1405)

Signed-off-by: Takeshi Yoneda <[email protected]>

Author: mathetake

MAINTAINERS.md

@@ -7,7 +7,7 @@ Please reach out to them for any questions, issues, or contributions related to
   - Area: Everything
   - [Envoy Proxy](https://github.com/envoyproxy/envoy) Maintainer
 - Dan Sun ([@yuzisun](https://github.com/yuzisun))
-  - Area: Everything, focusing on enterprise integration & core LLM features.
+  - Area: Everything, focusing on enterprise integration & core LLM features
   - [KServe](https://github.com/kserve/kserve) Maintainer
 - Erica Hughberg ([@missBerg](https://github.com/missBerg))
   - Area: Documentation, WebSite, Community
@@ -17,6 +17,11 @@ Please reach out to them for any questions, issues, or contributions related to
   - Area: Control Plane, Testing
 - Xunzhuo (Bit) Liu ([@Xunzhuo](https://github.com/Xunzhuo))
   - Area: Control Plane, Inference Pool & Gateway API Inference Extension
-  - [Envoy Gateway](https://github.com/envoyproxy/gateway) maintainer
+  - [Envoy Gateway](https://github.com/envoyproxy/gateway) Maintainer
 - Ignasi Barrera ([@nacx](https://github.com/nacx))
   - Area: MCP, aigw CLI (standalone mode)
+- Johnu George ([@johnugeorge](https://github.com/johnugeorge))
+  - Area: Enterprise features and integration, LLM features
+  - [Kubeflow](https://github.com/kubeflow/kubeflow) Steering Committee member
+- Gavrish Prabhu ([@gavrissh](https://github.com/gavrissh))
+  - Area: Control plane, Testing