chore(sdks): add routing-team into codeowner (#274)

## PR Scope

Please title your PR according to the following types and scopes following [conventional commits](https://www.conventionalcommits.org/en/v1.0.0/):

- `fix(SDK name):` will trigger a patch version
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- `<type>(public):` will trigger a patch version for non-code changes (e.g. README changes)
- `feat(SDK name):` will trigger a minor version
- `feat(breaking):` will trigger a major version for a breaking change

## Description

_[Summary of the change, motivation, and context]_

## How Has This Been Tested?

_[e.g. Manually, E2E tests, unit tests, Storybook]_

## Are there any breaking changes?

_[e.g. Type definitions, API definitions]_

If there are breaking changes, please ensure you bump the major version Bump the major version (by using the title `feat(breaking): ...`), post a notice in #eng-sdks, and explicitly notify all Uniswap Labs consumers of the SDK.

## (Optional) Feedback Focus

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## (Optional) Follow Ups

_[Things that weren't addressed in this PR, ways you plan to build on this work, or other ways this work could be extended]_

.github/CODEOWNERS

@@ -1 +1 @@
-* @uniswap/protocols @Uniswap/apis @jsy1218
+* @uniswap/protocols @Uniswap/apis @Uniswap/Routing