Fix offwaketime documentation typo

tools/offwaketime_example.txt

@@ -4,7 +4,7 @@ Demonstrations of offwaketime, the Linux eBPF/bcc version.
 This program shows kernel stack traces and task names that were blocked and
 "off-CPU", along with the stack traces and task names for the threads that woke
 them, and the total elapsed time from when they blocked to when they were woken
-up.  This combines the summaries from both the offcputime and wakeuptime tools.
+up.  This combines the summaries from both the offwaketime and wakeuptime tools.
 The time measurement will be very similar to off-CPU time, however, off-CPU time
 may include a little extra time spent waiting on a run queue to be scheduled.
 The combined stacks, task names, and total time is summarized in kernel context
@@ -343,13 +343,13 @@ optional arguments:
 
 examples:
     ./offwaketime             # trace off-CPU + waker stack time until Ctrl-C
-    ./offcputime 5           # trace for 5 seconds only
-    ./offcputime -f 5        # 5 seconds, and output in folded format
-    ./offcputime -m 1000     # trace only events that last more than 1000 usec
-    ./offcputime -M 10000    # trace only events that last less than 10000 usec
-    ./offcputime -p 185      # only trace threads for PID 185
-    ./offcputime -t 188      # only trace thread 188
-    ./offcputime -u          # only trace user threads (no kernel)
-    ./offcputime -k          # only trace kernel threads (no user)
-    ./offcputime -U          # only show user space stacks (no kernel)
-    ./offcputime -K          # only show kernel space stacks (no user)
+    ./offwaketime 5           # trace for 5 seconds only
+    ./offwaketime -f 5        # 5 seconds, and output in folded format
+    ./offwaketime -m 1000     # trace only events that last more than 1000 usec
+    ./offwaketime -M 10000    # trace only events that last less than 10000 usec
+    ./offwaketime -p 185      # only trace threads for PID 185
+    ./offwaketime -t 188      # only trace thread 188
+    ./offwaketime -u          # only trace user threads (no kernel)
+    ./offwaketime -k          # only trace kernel threads (no user)
+    ./offwaketime -U          # only show user space stacks (no kernel)
+    ./offwaketime -K          # only show kernel space stacks (no user)