Fix documentation error location.pushState

[elonmallin]

Documentation says window.location.pushState but the correct path should be window.history.pushState. (Noticed the guidelines says there should be an issue for each pull request but I'm already here and didn't create an issue for it nor found one)

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[elonmallin]

Signed it. With two emails, one should be the same that I use on github.

[googlebot]

CLAs look good, thanks!