Make meaningful variable example even clearer

Author: ryanmcdermott

README.md

@@ -49,7 +49,7 @@ const yyyymmdstr = moment().format('YYYY/MM/DD');
 
 **Good**:
 ```javascript
-const yearMonthDay = moment().format('YYYY/MM/DD');
+const currentDate = moment().format('YYYY/MM/DD');
 ```
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