Fixes to the User Activation v2 article (#8148)
Fixes to the User Activation v2 article (#8148)

In the *Making user activation consistent across APIs* article,

- Added backticks around `setTimeout()` and `postMessage()` where missing.
- Added a missing space.
- Added a missing "to".
myakura/WebFundamentals,myakura/WebFundamentals,lucab85/WebFundamentals,google/WebFundamentals,google/WebFundamentals,lucab85/WebFundamentals,lucab85/WebFundamentals,myakura/WebFundamentals,google/WebFundamentals,myakura/WebFundamentals,google/WebFundamentals,lucab85/WebFundamentals