Documentation: trace/stm: drop doubled words

Change "and and" to "and an".
Fix spello of "example".

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Link: https://lore.kernel.org/r/20200703212453.30553-4-rdunlap@infradead.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
1 file changed