profile-manual: Corrected bad literallayout statement.

(From yocto-docs rev: fc3aa3815bfdfac11e93167dda8e52457b42c4c6)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/profile-manual/profile-manual-usage.xml

@@ -950,7 +950,7 @@
                 </literallayout>
                 The end result is a summary of all the events recorded in the
                 trace:
-                <literallayout>
+                <literallayout class='monospaced'>
      skb__skb_copy_datagram_iovec                  13148
      irq__softirq_entry                             4796
      irq__irq_handler_exit                          3805