[grpc] Helping to keep the maintainer list sorted (#35593)

My Google Enterprise Id : https://github.com/tjagtap

I am making these commits from my personal id because I need to properly document the process for submission to grpc repo by non-googlers.

If safe review and approval are the same thing - Please grant both.

If Safe Review is different from approval - Please only grant the safe review for now,
I need to take a few screenshots before I get the approval. @veblush

Just adding the # go/keep-sorted to keep this list sorted.

releasenotes:no

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Closes #35593

COPYBARA_INTEGRATE_REVIEW=https://github.com/grpc/grpc/pull/35593 from jagtaptanvi:change_to_docs 172a73460d
PiperOrigin-RevId: 602836789

MAINTAINERS.md

@@ -8,6 +8,7 @@ See [CONTRIBUTING.md](https://github.com/grpc/grpc-community/blob/master/CONTRIB
 for general contribution guidelines.
 
 ## Maintainers (in alphabetical order)
+<!-- go/keep-sorted start case=no -->
 - [a11r](https://github.com/a11r), Google LLC
 - [apolcyn](https://github.com/apolcyn), Google LLC
 - [arjunroy](https://github.com/arjunroy), Google LLC
@@ -40,6 +41,7 @@ for general contribution guidelines.
 - [wenbozhu](https://github.com/wenbozhu), Google LLC
 - [yashykt](https://github.com/yashykt), Google LLC
 - [ZhouyihaiDing](https://github.com/ZhouyihaiDing), Google LLC
+<!-- go/keep-sorted end -->
 
 ## Emeritus Maintainers (in alphabetical order)
 - [adelez](https://github.com/adelez), Google LLC