I continued [my mission](https://github.com/flutter/flutter/pull/141431) to find as many typos as I could. This time it's a smaller set than before.
There is no need for issues since it's a typo fix.
I did not include the `'// flutter_ignore_for_file: stopwatch (see analyze.dart)'` directive since it's currently not used, and adding that shouldn't be too difficult.