Milo: Fix empty lines in step text

milo/appengine/logdog/internal/stream.pb.go

Index: milo/appengine/logdog/internal/stream.pb.go
diff --git a/milo/appengine/logdog/internal/stream.pb.go b/milo/appengine/logdog/internal/stream.pb.go
index fc6ce46890e860b5e218d781fe4426b714b9eb28..911e35dbc3acd8ee67e3bb8a89a52b34a2841260 100644
--- a/milo/appengine/logdog/internal/stream.pb.go
+++ b/milo/appengine/logdog/internal/stream.pb.go
@@ -67,7 +67,7 @@ func init() {
 
 var fileDescriptor0 = []byte{
 	// 179 bytes of a gzipped FileDescriptorProto
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+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0xcc, 0xbf, 0x6a, 0xc4, 0x30,
 	0x0c, 0x06, 0x70, 0x52, 0x4a, 0x09, 0xee, 0x96, 0x29, 0x64, 0x28, 0xa1, 0x53, 0x96, 0xda, 0xd0,
 	0x8e, 0x1d, 0xb3, 0xdc, 0x9c, 0x7b, 0x02, 0xc7, 0xd1, 0x39, 0x02, 0x5b, 0x32, 0xb1, 0xf2, 0xfe,
 	0x47, 0x7c, 0x7f, 0xb6, 0x5b, 0x04, 0xfa, 0xa4, 0xef, 0xa7, 0x46, 0x8f, 0xb2, 0xee, 0xb3, 0x76,