[ko] fix link (#24298)

* [ko] fix link

* [ko] translate img alt

Co-authored-by: hochan Lee <hochan049@gmail.com>

* [ko] sync line break

Co-authored-by: hochan Lee <hochan049@gmail.com>

* [ko] fix lint

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

---------

Co-authored-by: hochan Lee <hochan049@gmail.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

files/ko/webassembly/existing_c_to_wasm/index.md

@@ -183,6 +183,8 @@ img.src = blobURL;
 document.body.appendChild(img);
 ```
 
-보거라! 새로운 WebP 이미지의 영광을. :) [Demo](https://googlechrome.github.io/samples/webassembly/image.html) | [Full Code](/ko/docs/)
+보세요, 새로운 WebP 이미지의 영광을. :)
 
-![DevTools’ network panel and the generated image.](result.jpg)
+[데모](https://googlechrome.github.io/samples/webassembly/image.html) | [원문](https://web.dev/articles/emscripting-a-c-library?hl=ko)
+
+![DevTools 네트워크 패널과 생성된 이미지](result.jpg)