Rename 'keygen' to 'key management'

Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
diff --git a/tests/include/test/drivers/signature.h b/tests/include/test/drivers/signature.h
index e41892e..8abcb11 100644
--- a/tests/include/test/drivers/signature.h
+++ b/tests/include/test/drivers/signature.h
@@ -36,7 +36,7 @@
     /* If not PSA_SUCCESS, return this error code instead of processing the
      * function call. */
     psa_status_t forced_status;
-    /* Count the amount of times one of the keygen driver functions is called. */
+    /* Count the amount of times one of the signature driver functions is called. */
     unsigned long hits;
 } test_driver_signature_hooks_t;