[kernel] Fix comment error for rt_mutex_detach().
[kernel] Fix comment error for rt_mutex_detach().
ArdaFu/rt-thread,RT-Thread/rt-thread,RT-Thread/rt-thread,hezlog/rt-thread,RT-Thread/rt-thread,hezlog/rt-thread,geniusgogo/rt-thread,hezlog/rt-thread,hezlog/rt-thread,geniusgogo/rt-thread,RT-Thread/rt-thread,RT-Thread/rt-thread,hezlog/rt-thread,ArdaFu/rt-thread,hezlog/rt-thread,hezlog/rt-thread,ArdaFu/rt-thread,geniusgogo/rt-thread,geniusgogo/rt-thread,RT-Thread/rt-thread,nongxiaoming/rt-thread,nongxiaoming/rt-thread,nongxiaoming/rt-thread,geniusgogo/rt-thread,ArdaFu/rt-thread,geniusgogo/rt-thread,nongxiaoming/rt-thread,ArdaFu/rt-thread,RT-Thread/rt-thread,ArdaFu/rt-thread,geniusgogo/rt-thread,nongxiaoming/rt-thread,nongxiaoming/rt-thread,nongxiaoming/rt-thread,ArdaFu/rt-thread