Update rsautl.pod for typo
Fixes the typo
CLA: trivial
@@ -130,7 +130,7 @@ Recover the signed data
Examine the raw signed data:
- openssl rsautl -verify -in file -inkey key.pem -raw -hexdump
+ openssl rsautl -verify -in sig -inkey key.pem -raw -hexdump
0000 - 00 01 ff ff ff ff ff ff-ff ff ff ff ff ff ff ff ................
0010 - ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff ................
