chore: Fix feature type for ServeU

Author: qdot

buttplug/buttplug-device-config/build-config/buttplug-device-config-v3.json

@@ -17047,7 +17047,7 @@
         "name": "ServeU",
         "features": [
           {
-            "feature-type": "Stroker",
+            "feature-type": "Position",
             "actuator": {
               "step-range": [
                 0,

buttplug/buttplug-device-config/device-config-v3/buttplug-device-config-v3.yml

@@ -9765,7 +9765,7 @@ protocols:
       name: ServeU
       features:
         # TODO ServeU has an explicit connection interval of 20ms, we should define this here somehow?
-        - feature-type: Stroker
+        - feature-type: Position
           actuator:
             step-range:
               - 0