fixed block-editor component index to export ButtonBlockAppender corr…

…ectly (WordPress#25885)

packages/block-editor/src/components/index.js

@@ -24,7 +24,7 @@ export { default as __experimentalBlockNavigationTree } from './block-navigation
 export { default as __experimentalBlockVariationPicker } from './block-variation-picker';
 export { default as __experimentalBlockVariationTransforms } from './block-variation-transforms';
 export { default as BlockVerticalAlignmentToolbar } from './block-vertical-alignment-toolbar';
-export { default as ButtonBlockerAppender } from './button-block-appender';
+export { default as ButtonBlockAppender } from './button-block-appender';
 export { default as ColorPalette } from './color-palette';
 export { default as ColorPaletteControl } from './color-palette/control';
 export { default as ContrastChecker } from './contrast-checker';