Update article.md (fix '??' and '||' operators precedence number)

Author: vcodepro

1-js/02-first-steps/12-nullish-coalescing-operator/article.md

@@ -106,7 +106,7 @@ In practice, the zero height is often a valid value, that shouldn't be replaced
 
 ## Precedence
 
-The precedence of the `??` operator is the same as `||`. They both equal `4` in the [MDN table](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence#Table).
+The precedence of the `??` operator is the same as `||`. They both equal `3` in the [MDN table](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence#Table).
 
 That means that, just like `||`, the nullish coalescing operator `??` is evaluated before `=` and `?`, but after most other operations, such as `+`, `*`.