Fix button test

test/button.test.ts

@@ -2,10 +2,10 @@ import { FwButton } from '~/components'
 import { mount } from '@vue/test-utils'
 
 describe('FwButton', () => {
-  it('it should work', () => {
+  it('should display text', () => {
     const wrapper = mount(FwButton, {
-      props: {
-        text: 'Button Test'
+      slots: {
+        default: 'Button Test'
       }
     })