fix option bug in why3session latex

src/why3session/why3session_latex.ml

@@ -30,12 +30,12 @@ let opt_output_dir = ref ""
 let opt_longtable = ref false
 
 let spec =
-  ("-style <n>",
+  ("-style",
    Arg.Set_int opt_style,
-   " sets output style (1 or 2, default 1)") ::
-  ("-o <path>",
+   "<n> sets output style (1 or 2, default 1)") ::
+  ("-o",
    Arg.Set_string opt_output_dir,
-   " where to produce LaTeX files (default: session dir)") ::
+   " <path> where to produce LaTeX files (default: session dir)") ::
   ("-longtable",
    Arg.Set opt_longtable,
    " produce tables using longtable package instead of tabular") ::