Replace references to Mbed Crypto with Mbed TLS through-out documentation and comments.

Signed-off-by: Fredrik Hesse <fredrik@hesse.se>
diff --git a/docs/architecture/testing/psa-storage-format-testing.md b/docs/architecture/testing/psa-storage-format-testing.md
index 5514dfa..a5c1fd1 100644
--- a/docs/architecture/testing/psa-storage-format-testing.md
+++ b/docs/architecture/testing/psa-storage-format-testing.md
@@ -47,7 +47,7 @@
 * [Storage transaction file](#storage-transaction-resumption).
 * [Driver state files](#driver-state-files).
 
-For a more detailed description, refer to the [Mbed Crypto storage specification](../mbed-crypto-storage-specification.md).
+For a more detailed description, refer to the [Mbed TLS storage specification](../mbed-crypto-storage-specification.md).
 
 In addition, Mbed TLS includes an implementation of the PSA trusted storage interface on top of C stdio. This document addresses the test strategy for [PSA ITS over file](#psa-its-over-file) in a separate section below.