Move the speak note about "loop" into the page which we actually talk
about "loop". Also update the wording to make it more accurate.
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Co-authored-by: Jason Lin <lxj@google.com>
In the old version, using "break 'outer;" and using "break;" (without
the label) produce the same output.
This version fixes that to make the example more illustrative.
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Co-authored-by: Martin Geisler <martin@geisler.net>