JSON: Correcting bad sensor names

Signed-off-by: malikabh <abhishek.malik@intel.com>

src/collision/collision.json

@@ -3,7 +3,7 @@
     "Description": "API for the Collision Sensor",
     "Sensor Class":
     {
-        "collision":
+        "Collision":
         {
             "Name": "Grove Collision Sensor",
             "Description": "The Collision Sensor can detect whether any collision movement or vibration happens. It outputs a low pulse signal when vibration is detected.",
@@ -42,4 +42,4 @@
             }
         }
     }
-}
+}