bin: typo in ltl3dra shorthand

Reported by Fanda.

* src/bin/common_trans.cc: Here.

src/bin/common_trans.cc

@@ -43,7 +43,7 @@ static struct shorthands_t
     { "ltl2dstar", " --output-format=hoa %L %O"},
     { "ltl2tgba", " -H %f>%O" },
     { "ltl3ba", " -f %s>%O" },
-    { "ltl3dra", " -f %f>%O" },
+    { "ltl3dra", " -f %s>%O" },
     { "modella", " %L %O" },
     { "spin", " -f %s>%O" },
   };