typos error in man page pthread_setschedparam(3)

[刘湃 <liupai_work@xxxxxxx>]

In Example, Program source 

- fpe("\-i {e|s}         Set inherit scheduler attribute to\\n");
+ fpe("\-i {e|i}         Set inherit scheduler attribute to\\n");

- usage(argv[0], "Bad policy for main thread (-s)\n");
+ usage(argv[0], "Bad policy for main thread (-m)\n");
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