OsmoGSMTester: say 'modems', not 'modem' (sounds like it supports only one)

Change-Id: Ib59788a50754ea5290e665a9f9376d70e01c9be5
1 file changed
tree: a68c18b1d06ae5e736e8513a365bca05ded9a16e
  1. doc/