fix: typos in documentation files

examples/core/auth-nextjs-email/README.md

@@ -20,7 +20,7 @@ docker run --name postgres -e POSTGRES_PASSWORD=postgres -p 5432:5432 -d postgre
 npx prisma migrate dev --schema=./src/prisma/schema.prisma
 ```
 
-5. You also need to supply the following enviroment variables for the email server to work:
+5. You also need to supply the following environment variables for the email server to work:
 
 ```bash
 EMAIL_SERVER_HOST=

test/integration/data-grid/custom.spec.ts

@@ -29,7 +29,7 @@ test('Code component cell', async ({ page }) => {
  ).toBeVisible();
  await expect(editorModel.pageRoot.getByText('field: "customField"')).toBeVisible();
 
- // Can use cusom component for id field
+ // Can use custom component for id field
  await expect(editorModel.pageRoot.getByText('[id:0]')).toBeVisible();
 });
 

test/integration/undo-redo/basic.spec.ts

@@ -77,6 +77,6 @@ test('test batching text input actions into single undo entry', async ({ page })
  // Undo changes
  await page.keyboard.press('Control+Z');
 
- // Asssert that batched changes were reverted
+ // Assert that batched changes were reverted
  await expect(input).toHaveValue('some value');
 });