tests/test-helpers: fix endianness: do not print uint32_t as raw bytes

This unit test would not pass on big-endian machines.

Change-Id: I60dbcaa89b031c9a81c35e1dd0d9c963d486014c
diff --git a/src/tests/test-helpers.ok b/src/tests/test-helpers.ok
index ddfea78..f2e466f 100644
--- a/src/tests/test-helpers.ok
+++ b/src/tests/test-helpers.ok
@@ -6,7 +6,7 @@
 Encoding 0xdeadbeef to asn.1 bitstring
 Encoded: 20deadbeef
 Decoding back to uint32_t: 0xdeadbeef
-Encoding efbead to 24-bit asn.1 bitstring
+Encoding 0xdeadbeef to 24-bit asn.1 bitstring
 Encoded: 18adbeef
 Decoding string from asn.1: 0123456789012345
 Decoding large string from asn1: 0123456789012345678901234567890