Adapt comment

Author: schlessera

src/DB_Command.php

@@ -554,10 +554,9 @@ public function export( $args, $assoc_args ) {
 
 		$support_column_statistics = exec( $mysqldump_binary . ' --help | grep "column-statistics"' );
 
-		/**
-		 * Issue #144
+		/*
 		 * In case that `--default-character-set` is not given and `DB_CHARSET` is `utf8`,
-		 * use `utf8mb4` as a default-character-set to show emoji.
+		 * use `utf8mb4` as a `default-character-set` to ensure emojis are encoded correctly.
 		 */
 		if ( !isset( $assoc_args['default-character-set'] ) &&
 			defined( 'DB_CHARSET' ) && 'utf8' == constant( 'DB_CHARSET' ) ) {