Improve macro expansion help message
"the string representation of Mbed TLS compile time configurations.\n\n" \
"If \"--all\" and \"--any\" are not used, then, if all given arguments\n" \
"are defined in the Mbed TLS build, 0 is returned; otherwise 1 is\n" \
- "returned. If only one argument is given, the macro expansion of that\n" \
- "configuration will be printed (if any).\n" \
+ "returned. Macro expansions of configurations will be printed (if any).\n" \
"-l\tPrint all available configuration.\n" \
"-all\tReturn 0 if all configurations are defined. Otherwise, return 1\n" \
"-any\tReturn 0 if any configuration is defined. Otherwise, return 1\n" \
