[Docs]: Fix code in Locator -> Last property example usage

[kmarek]

Page(s)

src/Playwright/API/Generated/ILocator.cs

https://playwright.dev/dotnet/docs/api/class-locator#locator-last

Description

In provided links do Generated API docs and docs page, there is example of Last property usage as :

var banana = await page.GetByRole(AriaRole.Listitem).Last(1);

Expected:
var banana = await page.GetByRole(AriaRole.Listitem).Last;