fixes typing

readme.md

@@ -53,19 +53,9 @@ Any valid `Map` key can be used as identifier, but using a class allow the retur
 ```typescript
 class MyDependency {}
 
-manager.register(MyDependency, () => new MyDependency());
 const a = await manager.resolve(MyDependecy); //< `a` is of type `MyDependency`
-```
-
-Otherwise you can provide the type as type argument:
-
-```typescript
-function provider() {
-  return 'foo'
-}
-manager.register('my-dependency-identifier', provider);
-const a = await manager.resolve('my-dependency-identifier'); //< `a` is of type `unknown`
-const b = await manager.resolve<string>('my-dependency-identifier'); //< `b` is of type `string`
+const b = await manager.resolve('dependency-identifier'); //< `b` is of type `unknown`
+const c = await manager.resolve<number>('dependency-identifier'); //< `c` is of type `number`
 ```
 
 ## Errors