pk_internal: small renaming for mbedtls_pk_get_group_id()

Signed-off-by: Valerio Setti <valerio.setti@nordicsemi.no>
diff --git a/library/ssl_tls12_client.c b/library/ssl_tls12_client.c
index 9aa46bd..7f1ddaf 100644
--- a/library/ssl_tls12_client.c
+++ b/library/ssl_tls12_client.c
@@ -2016,7 +2016,7 @@
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     uint16_t tls_id = 0;
     psa_key_type_t key_type = PSA_KEY_TYPE_NONE;
-    mbedtls_ecp_group_id grp_id = mbedtls_pk_get_group_id(peer_pk);
+    mbedtls_ecp_group_id grp_id = mbedtls_pk_get_ec_group_id(peer_pk);
 
     if (mbedtls_ssl_check_curve(ssl, grp_id) != 0) {
         MBEDTLS_SSL_DEBUG_MSG(1, ("bad server certificate (ECDH curve)"));