proc: fixup copyright sign

Add copyright in two files before they get autorubberstamped.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/tools/testing/selftests/proc/proc-self-map-files-002.c b/tools/testing/selftests/proc/proc-self-map-files-002.c
index aebf4be..6f1f4a6 100644
--- a/tools/testing/selftests/proc/proc-self-map-files-002.c
+++ b/tools/testing/selftests/proc/proc-self-map-files-002.c
@@ -1,5 +1,5 @@
 /*
- * Copyright _ 2018 Alexey Dobriyan <adobriyan@gmail.com>
+ * Copyright © 2018 Alexey Dobriyan <adobriyan@gmail.com>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above