Fixed small CHANGELOG error (facebook#13583)

Author: bvaughn

CHANGELOG.md

@@ -26,7 +26,7 @@
 * Support passing booleans to the `focusable` SVG attribute ([@gaearon](https://github.com/gaearon) in [#13339](https://github.com/facebook/react/issues/13339))
 * Ignore `<noscript>` on the client when when hydrating ([@Ephem](https://github.com/Ephem) in [#13537](https://github.com/facebook/react/issues/13537))
 * Fix `gridArea` to be treated as a unitless CSS property ([@mgol](https://github.com/mgol) in [#13550](https://github.com/facebook/react/issues/13550))
-* Fix incorrect data in `compositionend` event when typing Korean on IE11 ([@robbertbrak](https://github.com/robbertbrak) in [#10217](https://github.com/facebook/react/issues/10217))
+* Fix incorrect data in `compositionend` event when typing Korean on IE11 ([@crux153](https://github.com/crux153) in [#12563](https://github.com/facebook/react/issues/12563))
 * Fix a crash when using dynamic `children` in the `<option>` tag ([@Slowyn](https://github.com/Slowyn) in [#13261](https://github.com/facebook/react/issues/13261), [@gaearon](https://github.com/gaearon) in [#13465](https://github.com/facebook/react/pull/13465))
 * Fix the `checked` attribute not getting initially set on the `input` ([@dilidili](https://github.com/dilidili) in [#13114](https://github.com/facebook/react/issues/13114))
 * Fix hydration of `dangerousSetInnerHTML` when `__html` is not a string ([@gaearon](https://github.com/gaearon) in [#13353](https://github.com/facebook/react/issues/13353))