fix(curriculum): fix a typo in js course (freeCodeCamp#56240)

curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/660880e67dfed9eb6adb7178.md

@@ -7,7 +7,7 @@ dashedName: step-48
 
 # --description--
 
-Before you can begin to build out your `locations` array, you will first need to learn about <df>objects</dfn>. Objects are an important data type in JavaScript. The next few steps will be dedicated to learning about them so you will better understand how to apply them in your project.
+Before you can begin to build out your `locations` array, you will first need to learn about <dfn>objects</dfn>. Objects are an important data type in JavaScript. The next few steps will be dedicated to learning about them so you will better understand how to apply them in your project.
 
 Objects are non primitive data types that store key-value pairs. Non primitive data types are mutable data types that are not `undefined`, `null`, `boolean`, `number`, `string`, or `symbol`. Mutable means that the data can be changed after it is created.