ma7_thermalc: fix read/write parameters

cfg/main/ma7_thermalc_cfg.py

@@ -35,8 +35,8 @@ Mod('ts',
     'frappy_psi.parmod.Converging',
     'test for parmod',
     unit='K',
-    value_param='th.value',
+    read='th.value',
-    target_param='th.setsamp',
+    write='th.setsamp',
     meaning=['temperature', 20],
     settling_time=20,
     tolerance=1,