fix(curriculum): grammatical typo (freeCodeCamp#57876)

Author: clarencepenz

curriculum/challenges/english/25-front-end-development/review-javascript-functional-programming/6723d2c154dd19d0025f7cd9.md

@@ -24,7 +24,7 @@ Review the concepts below to prepare for the upcoming quiz.
 
 - Currying is a functional programming technique that transforms a function with multiple arguments into a sequence of functions, each taking a single argument.
 
-Here is an example of a regualr function vs a curried function:
+Here is an example of a regular function vs a curried function:
 
 ```js
 // Regular function

curriculum/challenges/english/25-front-end-development/review-javascript/6723d3cfdd0717d3f1bf27e3.md

@@ -2613,7 +2613,7 @@ In the above example, the `findFactorial` function is called recursively until `
 
 - Currying is a functional programming technique that transforms a function with multiple arguments into a sequence of functions, each taking a single argument.
 
-Here is an example of a regualr function vs a curried function:
+Here is an example of a regular function vs a curried function:
 
 ```js
 // Regular function