fix(curriculum): reworded grammar to do without hyphen (#43487)

Suggesting the removal of "-" on line 29 in the description, as the comma before "such" is sufficient to separate the examples from the rest of the sentence.

curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/build-javascript-objects.md

@@ -26,7 +26,7 @@ var cat = {
 };
 ```
 
-In this example, all the properties are stored as strings, such as - `name`, `legs`, and `tails`. However, you can also use numbers as properties. You can even omit the quotes for single-word string properties, as follows:
+In this example, all the properties are stored as strings, such as `name`, `legs`, and `tails`. However, you can also use numbers as properties. You can even omit the quotes for single-word string properties, as follows:
 
 ```js
 var anotherObject = {