Add SIGINFO to documentation (#2762)

The feature was added in https://github.com/puma/puma/pull/1320 but was missing from documentation.
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Fabian Schwahn 2021-12-06 11:18:55 +01:00 committed by GitHub
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@ -42,6 +42,7 @@ Puma cluster responds to these signals:
- `INT ` equivalent of sending Ctrl-C to cluster. Puma will attempt to finish then exit.
- `CHLD`
- `URG ` refork workers in phases from worker 0 if `fork_workers` option is enabled.
- `INFO` print backtraces of all puma threads
## Callbacks order in case of different signals