fix(curriculum): change toFix to toFixed in lesson content (freeCodeCamp#61843)

Co-authored-by: Sanchit Kathpalia <sanchitkhthpalia.com>

Author: sanchitkhthpalia

curriculum/challenges/english/25-front-end-development/lecture-working-with-types-and-objects/6732c69d82814160951b1aa7.md

@@ -7,7 +7,7 @@ dashedName: what-is-the-number-constructor-and-how-does-it-work-for-type-coercio
 
 # --description--
 
-The `Number()` constructor is used to create a number object. The number object contains a few helpful properties and methods like the `isNaN` and the `toFix` method. Here's an example using the `Number()` constructor with the `new` keyword:
+The `Number()` constructor is used to create a number object. The number object contains a few helpful properties and methods like the `isNaN` and the `toFixed` method. Here's an example using the `Number()` constructor with the `new` keyword:
 
 ```js
 const myNum = new Number("34");