Documentation/rtla: Fix typo in common_timerlat_description.rst

Fix "it enable" to "it enables".

Fixes: 29380d4055e5 ("rtla: Add rtla timerlat documentation")
Signed-off-by: Tomas Glozar <[e-mail]>
Reviewed-by: Luis Claudio R. Goncalves <[e-mail]>
Signed-off-by: Jonathan Corbet <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/tools/rtla/common_timerlat_description.rst

···
 
 The *timerlat* tracer outputs information in two ways. It periodically
 prints the timer latency at the timer *IRQ* handler and the *Thread*
-handler. It also enable the trace of the most relevant information via
+handler. It also enables the trace of the most relevant information via
 **osnoise:** tracepoints.