Correct parameter usage for click() in shadow.mdx (#6145)

* Update shadow.mdx

- Update the suggestion to pass 'top' to cy.click() using the options defined in cy.click()'s documentation

* Update shadow.mdx

Add missing quote

* Update shadow.mdx

One-line for prettier reasons

Author: MatthewSbar

docs/api/commands/shadow.mdx

@@ -96,13 +96,10 @@ When working with `cy.click()`, it sometimes won't click the right element in
 Chrome. It's happening because of
 [the ambiguity in spec](https://bugs.chromium.org/p/chromium/issues/detail?id=1188919&q=shadowRoot%20elementFromPoint&can=2).
 
-In this case, pass `{ position: 'top' }` to `cy.click()` like below:
+In this case, pass `'top'` to `cy.click()` like below:
 
 ```js
-cy.get('#element')
-  .shadow()
-  .find('[data-test-id="my-button"]')
-  .click({ position: 'top' })
+cy.get('#element').shadow().find('[data-test-id="my-button"]').click('top')
 ```
 
 ## Command Log