Revert "psa_util: fix typo in comment"

This reverts commit 98f5db9fca7fa9dc3a30c3264b720e41589d713d.

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/include/mbedtls/psa_util.h b/include/mbedtls/psa_util.h
index 7fcc9d2..e8fb3de 100644
--- a/include/mbedtls/psa_util.h
+++ b/include/mbedtls/psa_util.h
@@ -155,7 +155,7 @@
  * \param md_type   The type of digest to search for.
  *
  * \return          The PSA algorithm identifier associated with \p md_type;
- *                  #PSA_ALG_NONE if the algorithm is unsupported or invalid.
+ *                  #PSA_ALG_NONE if the algorithm is unuspported or invalid.
  */
 psa_algorithm_t mbedtls_md_psa_alg_from_type(mbedtls_md_type_t md_type);