fixed redundant id in update methods

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/RoomController.java

@@ -28,7 +28,7 @@ public class RoomController {
         return roomRepository.save(r);
     }
 
-    @PutMapping("/{id}")
+    @PutMapping
     public Room update(@RequestBody Room r) {
         return roomRepository.save(r);
     }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/SensorController.java

@@ -28,7 +28,7 @@ public class SensorController {
         return sensorRepository.save(s);
     }
 
-    @PutMapping("/{id}")
+    @PutMapping
     public Sensor update(@RequestBody Sensor s) {
         return sensorRepository.save(s);
     }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/SmartPlugController.java

@@ -28,7 +28,7 @@ public class SmartPlugController {
         return smartPlugRepository.save(sp);
     }
 
-    @PutMapping("/{id}")
+    @PutMapping
     public SmartPlug update(@RequestBody SmartPlug sp) {
         return smartPlugRepository.save(sp);
     }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/SwitchController.java

@@ -28,7 +28,7 @@ public class SwitchController {
         return switchRepository.save(s);
     }
 
-    @PutMapping("/{id}")
+    @PutMapping
     public Switch update(@RequestBody Switch s) {
         return switchRepository.save(s);
     }

src/main/java/ch/usi/inf/sa4/sanmarinoes/smarthut/controller/UserController.java

@@ -28,7 +28,7 @@ public class UserController {
         return userRepository.save(u);
     }
 
-    @PutMapping("/{id}")
+    @PutMapping
     public User update(@RequestBody User u) {
         return userRepository.save(u);
     }