[tahoe-lafs-trac-stream] [Tahoe-LAFS] #3559: Mention code of conduct in contributors guide

[Tahoe-LAFS]

#3559: Mention code of conduct in contributors guide
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 Reporter:  sajith         |          Owner:
     Type:  defect         |         Status:  new
 Priority:  normal         |      Milestone:  undecided
Component:  documentation  |        Version:  n/a
 Keywords:                 |  Launchpad Bug:
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 Victoriia has opened a PR at !GitHub:

 https://github.com/tahoe-lafs/tahoe-lafs/pull/926

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/3559>
Tahoe-LAFS <https://Tahoe-LAFS.org>
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