Docs: use consistent kotlinlang.org url in references

libraries/stdlib/src/kotlin/reflect/KClass.kt

@@ -8,7 +8,7 @@ package kotlin.reflect
 /**
  * Represents a class and provides introspection capabilities.
  * Instances of this class are obtainable by the `::class` syntax.
- * See the [Kotlin language documentation](http://kotlinlang.org/docs/reference/reflection.html#class-references)
+ * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/reflection.html#class-references)
  * for more information.
  *
  * @param T the type of the class.

libraries/stdlib/src/kotlin/reflect/KProperty.kt

@@ -10,7 +10,7 @@ package kotlin.reflect
  * Represents a property, such as a named `val` or `var` declaration.
  * Instances of this class are obtainable by the `::` operator.
  * 
- * See the [Kotlin language documentation](http://kotlinlang.org/docs/reference/reflection.html)
+ * See the [Kotlin language documentation](https://kotlinlang.org/docs/reference/reflection.html)
  * for more information.
  *
  * @param R the type of the property.