Update paths pointing to tests/data_files

These now point to framework/data_files instead.

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/programs/ssl/mini_client.c b/programs/ssl/mini_client.c
index 6bef208..ba0195c 100644
--- a/programs/ssl/mini_client.c
+++ b/programs/ssl/mini_client.c
@@ -70,7 +70,7 @@
 #endif
 
 #if defined(MBEDTLS_X509_CRT_PARSE_C)
-/* This is tests/data_files/test-ca2.crt, a CA using EC secp384r1 */
+/* This is framework/data_files/test-ca2.crt, a CA using EC secp384r1 */
 const unsigned char ca_cert[] = {
     0x30, 0x82, 0x02, 0x52, 0x30, 0x82, 0x01, 0xd7, 0xa0, 0x03, 0x02, 0x01,
     0x02, 0x02, 0x09, 0x00, 0xc1, 0x43, 0xe2, 0x7e, 0x62, 0x43, 0xcc, 0xe8,