Correct styling of Mbed TLS in documentation

Several bits of documentation were incorrectly styling Mbed TLS
as MbedTLS.

Signed-off-by: Thomas Daubney <thomas.daubney@arm.com>
diff --git a/programs/ssl/ssl_context_info.c b/programs/ssl/ssl_context_info.c
index ebdef4f..41b12e9 100644
--- a/programs/ssl/ssl_context_info.c
+++ b/programs/ssl/ssl_context_info.c
@@ -1,5 +1,5 @@
 /*
- *  MbedTLS SSL context deserializer from base64 code
+ *  Mbed TLS SSL context deserializer from base64 code
  *
  *  Copyright The Mbed TLS Contributors
  *  SPDX-License-Identifier: Apache-2.0