Documentation/admin-guide: intel_pstate: drop doubled word

Drop the doubled word "to".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: linux-pm@vger.kernel.org
Link: https://lore.kernel.org/r/20200704032020.21923-10-rdunlap@infradead.orgSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/admin-guide/pm/intel_pstate.rst

@@ -708,7 +708,7 @@ core (for the policies with other scaling governors).
 
 The ``ftrace`` interface can be used for low-level diagnostics of
 ``intel_pstate``.  For example, to check how often the function to set a
-P-state is called, the ``ftrace`` filter can be set to to
+P-state is called, the ``ftrace`` filter can be set to
 :c:func:`intel_pstate_set_pstate`::
 
  # cd /sys/kernel/debug/tracing/