Fix reference to deprecated macro in documentation

The reference was introduced in #4174.

Signed-off-by: Bence Szépkúti <bence.szepkuti@arm.com>
diff --git a/include/psa/crypto.h b/include/psa/crypto.h
index 5f9c5a8..81e1f28 100644
--- a/include/psa/crypto.h
+++ b/include/psa/crypto.h
@@ -777,7 +777,7 @@
  *      publicExponent     INTEGER  }  -- e
  *   ```
  * - For elliptic curve keys on a twisted Edwards curve (key types for which
- *   #PSA_KEY_TYPE_IS_ECC_PUBLIC_KEY is true and #PSA_KEY_TYPE_GET_CURVE
+ *   #PSA_KEY_TYPE_IS_ECC_PUBLIC_KEY is true and #PSA_KEY_TYPE_ECC_GET_FAMILY
  *   returns #PSA_ECC_FAMILY_TWISTED_EDWARDS), the public key is as defined
  *   by RFC 8032
  *   (a 32-byte string for Edwards25519, a 57-byte string for Edwards448).