psa: Fix references to macros in comments

This commit tries to fix the usage of #MACRO_NAME
to reference macros in comments.

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/library/psa_crypto_invasive.h b/library/psa_crypto_invasive.h
index c609c77..2b4ee1f 100644
--- a/library/psa_crypto_invasive.h
+++ b/library/psa_crypto_invasive.h
@@ -62,12 +62,12 @@
  *                      It is called by mbedtls_psa_crypto_free().
  *                      By default this is mbedtls_entropy_free().
  *
- * \retval PSA_SUCCESS
+ * \retval #PSA_SUCCESS
  *         Success.
- * \retval PSA_ERROR_NOT_PERMITTED
+ * \retval #PSA_ERROR_NOT_PERMITTED
  *         The caller does not have the permission to configure
  *         entropy sources.
- * \retval PSA_ERROR_BAD_STATE
+ * \retval #PSA_ERROR_BAD_STATE
  *         The library has already been initialized.
  */
 psa_status_t mbedtls_psa_crypto_configure_entropy_sources(