tracing: Fix spelling in osnoise tracer "interferences" -> "interference"

There is a spelling mistake in a TP_printk message, the word interferences
is not the plural of interference. Fix this.

Link: https://lkml.kernel.org/r/20210628125522.56361-1-colin.king@canonical.comReviewed-by: NDaniel Bristot de Oliveira <bristot@redhat.com>
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NSteven Rostedt (VMware) <rostedt@goodmis.org>

include/trace/events/osnoise.h

@@ -129,7 +129,7 @@ TRACE_EVENT(sample_threshold,
 		__entry->interference = interference;
 	),
 
-	TP_printk("start %llu.%09u duration %llu ns interferences %llu",
+	TP_printk("start %llu.%09u duration %llu ns interference %llu",
 		__print_ns_to_secs(__entry->start),
 		__print_ns_without_secs(__entry->start),
 		__entry->duration,