Further limit the number of peertube signups

src/freedombone-app-peertube

     echo '' >> $peertube_config_file
     echo 'signup:' >> $peertube_config_file
     echo '  enabled: true' >> $peertube_config_file
-    echo '  limit: 5 # When the limit is reached, registrations are disabled. -1 == unlimited' >> $peertube_config_file
+    echo '  limit: 2 # When the limit is reached, registrations are disabled. -1 == unlimited' >> $peertube_config_file
     echo '' >> $peertube_config_file
     echo 'user:' >> $peertube_config_file
     echo '  # Default value of maximum video BYTES the user can upload (does not take into account transcoded files).' >> $peertube_config_file