docs(api): add example to page.$$eval (#5200)
docs(api): add example to page.$$eval (#5200)

This makes it more clear that the callback receives an actual array of nodes instead of just a NodeList.

Co-authored-by: Mathias Bynens <17a2cbc4e33156874a9862b0f530521117e66a3d@qiwi.be>

puppeteer/puppeteer,GoogleChrome/puppeteer,GoogleChrome/puppeteer,puppeteer/puppeteer,GoogleChrome/puppeteer,puppeteer/puppeteer,puppeteer/puppeteer