Merge pull request #2003 from m47h4r/minor-fix-nullish-coalescing-operator

minor fix: precedence is 5 according to MDN

Author: iliakan

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

@@ -68,7 +68,7 @@ Which behavior is better depends on a particular use case. When zero height is a
 
 ## Precedence
 
-The precedence of the `??` operator is rather low: `7` in the [MDN table](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence#Table).
+The precedence of the `??` operator is rather low: `5` in the [MDN table](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Operator_Precedence#Table).
 
 So `??` is evaluated after most other operations, but before `=` and `?`.