replace all contains

docs/src/demos/Extensions/Strike/index.spec.js

@@ -3,18 +3,17 @@ context('/api/extensions/strike', () => {
     cy.visit('/api/extensions/strike')
   })
 
-  beforeEach(done => {
+  beforeEach(() => {
     cy.get('.ProseMirror').then(([{ editor }]) => {
       editor.setContent('<p>Example Text</p>')
       editor.focus()
       editor.selectAll()
-      done()
     })
   })
 
   it('the button should strike the selected text', () => {
     cy.get('.demo__preview button:first').click({ force: true })
-    cy.get('.ProseMirror').contains('s', 'Example Text')
+    cy.get('.ProseMirror').find('s').should('contain', 'Example Text')
   })
 
   it('the button should toggle the selected text striked', () => {
@@ -26,7 +25,7 @@ context('/api/extensions/strike', () => {
 
   it('the keyboard shortcut should strike the selected text', () => {
     cy.get('.ProseMirror').type('{meta}d', { force: true })
-    cy.get('.ProseMirror').contains('s', 'Example Text')
+    cy.get('.ProseMirror').find('s').should('contain', 'Example Text')
   })
 
   it('the keyboard shortcut should toggle the selected text striked', () => {
@@ -37,6 +36,7 @@ context('/api/extensions/strike', () => {
   it('should make a striked text from the markdown shortcut', () => {
     cy.get('.ProseMirror')
       .type('~Strike~', { force: true })
-      .contains('s', 'Strike')
+      .find('s')
+      .should('contain', 'Strike')
   })
 })