fix: RolesController: @GetMapping,@PostMapping

src/main/java/com/example/fercoganbackend/controller/RolesController.java

@@ -16,11 +16,12 @@ public class RolesController {
     RolesController(RolesRepository rolesRepository){
         this.rolesRepository=rolesRepository;
     }
+    @GetMapping
     public List<Roles> getRoles(){
         return rolesRepository.findAll();
     }
-
-    public Roles setRoles(Roles roles){
+    @PostMapping
+    public Roles setRoles(@RequestBody Roles roles){
         return rolesRepository.save(roles);
     }
     @PutMapping("/{id}")