9842 man page typos and spelling

@@ -458,11 +458,11 @@
        The real-time priority, time quantum, and time quantum signal are
        inherited across the fork(2) and exec(2) system calls. When using the
        time quantum signal with a user defined signal handler across the
        exec(2) system call, the new image must install an appropriate user
        defined signal handler before the time quantum expires. Otherwise,
-       unpredicable behavior would result.
+       unpredictable behavior would result.
 
    Time-Sharing Class
        The time-sharing scheduling policy provides for a fair and effective
        allocation of the CPU resource among processes with varying CPU
        consumption characteristics. The objectives of the time-sharing policy