fix test title

test/function/assignment-to-exports-b/_config.js

@@ -1,7 +1,7 @@
 const assert = require( 'assert' );
 
 module.exports = {
-	description: 'exports are kept up-to-date',
+	description: 'exports are rewritten inside a variable init',
 	exports: exports => {
 		assert.equal( exports.b, 42 );
 	}