Update client-thunderbird.md

Edit link to SOGo Integrator because of 404 Error
Maybe fixed it?
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Tobias 2018-09-24 01:08:18 +02:00 committet von GitHub
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@ -52,5 +52,5 @@ Automatic configuration of calendars and address books in Thunderbird is not cur
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<div class="client_variables_unavailable" markdown="1">
Automatic configuration of calendars and address books (from step 9 onward) in Thunderbird is only supported if your server administrator has enabled [SOGo Integrator](third_party-thunderbird).
Automatic configuration of calendars and address books (from step 9 onward) in Thunderbird is only supported if your server administrator has enabled [SOGo Integrator](../third_party-thunderbird).
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