rename HTML function names

tests/cypress/integration/core/generateHTML.spec.ts

@@ -0,0 +1,29 @@
+/// <reference types="cypress" />
+
+import { generateHTML } from '@tiptap/html'
+import Document from '@tiptap/extension-document'
+import Paragraph from '@tiptap/extension-paragraph'
+import Text from '@tiptap/extension-text'
+
+describe('generateHTML', () => {
+  it('generate HTML from JSON without an editor instance', () => {
+    const json = {
+      type: 'document',
+      content: [{
+        type: 'paragraph',
+        content: [{
+          type: 'text',
+          text: 'Example Text',
+        }],
+      }],
+    }
+
+    const html = generateHTML(json, [
+      Document(),
+      Paragraph(),
+      Text(),
+    ])
+
+    expect(html).to.eq('<p>Example Text</p>')
+  })
+})