schema: fix stepwise schema

Integers should really be numbers.

Change-Id: I9000146f3e1c1e5ba754e4573b5ff1ddd5b06780
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/schemas/Stepwise.json b/schemas/Stepwise.json
index 51853e8..36cb5d9 100644
--- a/schemas/Stepwise.json
+++ b/schemas/Stepwise.json
@@ -12,7 +12,7 @@
             "type": "string"
         },
         "NegativeHysteresis": {
-            "type": "integer"
+            "type": "number"
         },
         "Output": {
             "type": "array",
@@ -21,7 +21,7 @@
             }
         },
         "PositiveHysteresis": {
-            "type": "integer"
+            "type": "number"
         },
         "Reading": {
             "type": "array",