Remove backticks from -inject-labels flag desc (#688)
Remove backticks from -inject-labels flag desc (#688)

Backticks in a flag description have a special meaning, in both standard
`flag` and the `pflag` package used here. Because of this, flag was
described as:

    --inject-labels tk prune       add tanka environment label to each
                                   created resource. Required for tk prune.

Now it will look like:

    --inject-labels                add tanka environment label to each
                                   created resource. Required for 'tk prune'.

See https://github.com/spf13/pflag/issues/200

Signed-off-by: Oleg Zaytsev <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@olegzaytsev.com>
grafana/tanka