In JS Map .values() example, renamed the loop variable in for-of from key to value for clarity, as .values() returns map values, not keys.

Author: ChoizzV2

docs/cheatsheet/map.md

@@ -143,8 +143,8 @@ You can iterate over the map values using `values()` method as in the order it w
 ```javascript
 const map = new Map()
 map.set('name', 'Bob').set('age', 20)
-for (const key of map.values()) {
-  console.log(`${key}`)
+for (const value of map.values()) {
+  console.log(`${value}`)
 }
 
 // Bob