Fix name of PSA_ALG_IS_BLOCK_CIPHER_MAC

The macro was used under the name PSA_ALG_IS_BLOCK_CIPHER_MAC but
defined as PSA_ALG_IS_CIPHER_MAC. That wouldn't have worked if we used
this macro (we currently don't but it may become useful).
diff --git a/include/psa/crypto.h b/include/psa/crypto.h
index ff29936..ab9bb8e 100644
--- a/include/psa/crypto.h
+++ b/include/psa/crypto.h
@@ -761,7 +761,7 @@
  *         This macro may return either 0 or 1 if \p alg is not a supported
  *         algorithm identifier.
  */
-#define PSA_ALG_IS_CIPHER_MAC(alg)                                      \
+#define PSA_ALG_IS_BLOCK_CIPHER_MAC(alg)                                \
     (((alg) & (PSA_ALG_CATEGORY_MASK | PSA_ALG_MAC_SUBCATEGORY_MASK)) == \
      PSA_ALG_CIPHER_MAC_BASE)