[tbb-bugs] #34247 [Applications/Tor Browser]: Update tor-browser-build README

[Tor Bug Tracker & Wiki]

#34247: Update tor-browser-build README
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     Reporter:  gk                   |      Owner:  gk
         Type:  defect               |     Status:  assigned
     Priority:  Medium               |  Milestone:
    Component:  Applications/Tor     |    Version:
  Browser                            |   Keywords:  tbb, rbm,
     Severity:  Normal               |  TorBrowserTeam202005,
                                     |  GeorgKoppen202005
Actual Points:                       |  Parent ID:
       Points:                       |   Reviewer:
      Sponsor:                       |
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 Over the time some errors and things to correct have accumulated in the
 `README` file. We should fix them.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/34247>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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