perf bench: Fix a couple of spelling mistakes in options text

There are a couple of spelling mistakes in the text. Fix these.
Signed-off-by: Colin King <colin.king@canonical.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: kernel-janitors@vger.kernel.org
Link: http://lore.kernel.org/lkml/20200812064647.200132-1-colin.king@canonical.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/bench/find-bit-bench.c

@@ -17,9 +17,9 @@ static unsigned int inner_iterations = 100000;
 
 static const struct option options[] = {
 	OPT_UINTEGER('i', "outer-iterations", &outer_iterations,
-		"Number of outerer iterations used"),
+		"Number of outer iterations used"),
 	OPT_UINTEGER('j', "inner-iterations", &inner_iterations,
-		"Number of outerer iterations used"),
+		"Number of inner iterations used"),
 	OPT_END()
 };