Minor bandwidth file spec updates
The terminator was 4 characters long from sbws 0.1.0 to sbws 1.0.0
https://gitweb.torproject.org/torspec.git/tree/bandwidth-file-spec.txt#n96
The terminator was 4 characters long from sbws 0.1.0 to sbws 1.0.0
https://gitweb.torproject.org/torspec.git/tree/bandwidth-file-spec.txt#n96