Fix inconsistent spacing in hooks.php file

Remove unnecessary whitespace around the assignment operator in the 'hasTransparency' key modification. This change ensures code consistency and readability in the dominant-color-images plugin.

plugins/dominant-color-images/hooks.php

@@ -256,7 +256,7 @@ function dominant_color_prepare_attachment_for_js( $response, WP_Post $attachmen
 	$response['hasTransparency']      = '';
 	$response['hasTransparencyClass'] = '';
 	if ( isset( $meta['has_transparency'] ) ) {
-		$response['hasTransparency']      = (bool) $meta['has_transparency'];
+		$response['hasTransparency'] = (bool) $meta['has_transparency'];
 	}
 
 	return $response;