Update obsolete section title

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/library/psa_crypto.c b/library/psa_crypto.c
index 348c79c..e7f99ad 100644
--- a/library/psa_crypto.c
+++ b/library/psa_crypto.c
@@ -5585,7 +5585,7 @@
 }
 
 /****************************************************************/
-/* Generators */
+/* Key derivation: output generation */
 /****************************************************************/
 
 #if defined(BUILTIN_ALG_ANY_HKDF) || \
@@ -6667,7 +6667,7 @@
 
 
 /****************************************************************/
-/* Key derivation */
+/* Key derivation: operation management */
 /****************************************************************/
 
 #if defined(AT_LEAST_ONE_BUILTIN_KDF)
@@ -8222,6 +8222,8 @@
                                    key);
 }
 
+
+
 /****************************************************************/
 /* Module setup */
 /****************************************************************/
@@ -8497,6 +8499,12 @@
     return status;
 }
 
+
+
+/****************************************************************/
+/* PAKE */
+/****************************************************************/
+
 #if defined(PSA_WANT_ALG_SOME_PAKE)
 psa_status_t psa_crypto_driver_pake_get_password_len(
     const psa_crypto_driver_pake_inputs_t *inputs,