tracing: Fix a comment and a trivial format issue in tracepoint.h

Fix the tracepoint documentation path in tracepoints headers and
a misaligned tabulation.

Signed-off-by: Li Hong <lihong.hi@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
LKML-Reference: <3a3680030909220300h7cf18849q4d4702b9d4feaa67@mail.gmail.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

include/linux/tracepoint.h

@@ -4,7 +4,7 @@
 /*
  * Kernel Tracepoint API.
  *
- * See Documentation/tracepoint.txt.
+ * See Documentation/trace/tracepoints.txt.
  *
  * (C) Copyright 2008 Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
  *
@@ -36,7 +36,7 @@ struct tracepoint {
 #ifndef DECLARE_TRACE
 
 #define TP_PROTO(args...)	args
-#define TP_ARGS(args...)		args
+#define TP_ARGS(args...)	args
 
 #ifdef CONFIG_TRACEPOINTS