[Kotlin/en] correct object clarification (#2413)

* Kotlin: correct object clarification

* Kotlin: correct object clarification

kotlin.html.markdown

@@ -337,7 +337,7 @@ enum class EnumExample {
 
 /*
 The "object" keyword can be used to create singleton objects.
-We cannot assign it to a variable, but we can refer to it by its name.
+We cannot instantiate it but we can refer to its unique instance by its name.
 This is similar to Scala singleton objects.
 */
 object ObjectExample {
@@ -346,6 +346,11 @@ object ObjectExample {
     }
 }
 
+fun useObject() {
+    ObjectExample.hello()
+    val someRef: Any = ObjectExample // we use objects name just as is
+}
+
 ```
 
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