Translate the remaining warning page into Korean

The react-test-renderer warning was still written in English after the related react-dom/test-utils page was translated. This keeps the warning section consistent while preserving package names and heading anchors.

Confidence: high

Scope-risk: narrow

Tested: npx --yes yarn@1.22.22 textlint-lint; npx --yes yarn@1.22.22 lint-heading-ids; npx --yes yarn@1.22.22 prettier:diff; npx --yes yarn@1.22.22 tsc; npx --yes yarn@1.22.22 lint; npx --yes -p node@20 -p yarn@1.22.22 yarn build

Author: JetProc

src/content/warnings/react-test-renderer.md

@@ -1,14 +1,14 @@
 ---
-title: react-test-renderer Deprecation Warnings
+title: react-test-renderer 지원 중단 경고
 ---
 
-## ReactTestRenderer.create() warning {/*reacttestrenderercreate-warning*/}
+## ReactTestRenderer.create() 경고 {/*reacttestrenderercreate-warning*/}
 
-react-test-renderer is deprecated. A warning will fire whenever calling ReactTestRenderer.create() or ReactShallowRender.render(). The react-test-renderer package will remain available on NPM but will not be maintained and may break with new React features or changes to React's internals.
+react-test-renderer는 더 이상 사용되지 않습니다. `ReactTestRenderer.create()` 또는 `ReactShallowRender.render()`를 호출할 때마다 경고가 발생합니다. react-test-renderer 패키지는 NPM에서 계속 사용할 수 있지만 유지 관리되지 않으며 React의 새로운 기능이나 내부 구현 변경으로 인해 깨질 수 있습니다.
 
-The React Team recommends migrating your tests to [@testing-library/react](https://testing-library.com/docs/react-testing-library/intro/) or [@testing-library/react-native](https://callstack.github.io/react-native-testing-library/docs/start/intro) for a modern and well supported testing experience.
+React 팀은 안정적으로 지원되는 최신 테스트 환경을 위해 테스트를 [@testing-library/react](https://testing-library.com/docs/react-testing-library/intro/) 또는 [@testing-library/react-native](https://callstack.github.io/react-native-testing-library/docs/start/intro)로 마이그레이션하는 것을 권장합니다.
 
 
-## new ShallowRenderer() warning {/*new-shallowrenderer-warning*/}
+## new ShallowRenderer() 경고 {/*new-shallowrenderer-warning*/}
 
-The react-test-renderer package no longer exports a shallow renderer at `react-test-renderer/shallow`. This was simply a repackaging of a previously extracted separate package: `react-shallow-renderer`. Therefore you can continue using the shallow renderer in the same way by installing it directly. See [Github](https://github.com/enzymejs/react-shallow-renderer) / [NPM](https://www.npmjs.com/package/react-shallow-renderer).
+react-test-renderer 패키지는 더 이상 `react-test-renderer/shallow`에서 shallow renderer를 내보내지 않습니다. 이는 이전에 별도 패키지로 분리된 `react-shallow-renderer`를 다시 패키징한 것에 불과했습니다. 따라서 직접 설치하면 shallow renderer를 같은 방식으로 계속 사용할 수 있습니다. [GitHub](https://github.com/enzymejs/react-shallow-renderer) / [NPM](https://www.npmjs.com/package/react-shallow-renderer)을 참고하세요.