juno_energy: Fix max capacity
diff --git a/libs/utils/platforms/juno_energy.py b/libs/utils/platforms/juno_energy.py
index cb2e5af..69c7b7e 100644
--- a/libs/utils/platforms/juno_energy.py
+++ b/libs/utils/platforms/juno_energy.py
@@ -74,7 +74,7 @@
     (625000,  ActiveState(capacity=579,   power=251)),
     (800000,  ActiveState(capacity=744,   power=359)),
     (950000,  ActiveState(capacity=883,   power=479)),
-    (1100000, ActiveState(capacity=1024,  power=616)),
+    (1100000, ActiveState(capacity=1023,  power=616)),
 ])
 
 a57_cpu_idle_states = OrderedDict([