Update link to a more recent article

Co-authored-by: Janne Savolainen <janne.savolainen@live.fi>

Signed-off-by: Iku-turso <mikko.aspiala@gmail.com>

src/common/utils/composable-responsibilities/discriminable/discriminable.ts

@@ -3,7 +3,7 @@
  * Licensed under MIT License. See LICENSE in root directory for more information.
  */
 
-// See: https://www.typescriptlang.org/docs/handbook/unions-and-intersections.html#discriminating-unions
+// See: https://www.typescriptlang.org/docs/handbook/2/narrowing.html#discriminated-unions
 export interface Discriminable<T extends string> { kind: T }
 
 // Note: this will fail at transpilation time, if all kinds are not instructed in switch/case.