fixed typo

pages/hack-school/js.mdx

@@ -105,12 +105,12 @@ let y = false;
 let person = {firstName: "John", lastName: "Doe"};
 
 // Array object
-let communites = ["Hack", "AI", "Cyber", "Design"];
+let communities = ["Hack", "AI", "Cyber", "Design"];
 ```
 
 ## Equality
 JavaScript offers loose equality (==) and strict equality (===) operators for comparison. 
-It's recommended to always use strict equality to avoid unexpected type conversions. Strict equaltiy checks for both
+It's recommended to always use strict equality to avoid unexpected type conversions. Strict equality checks for both
 value and type while loose equality checks only value.
 
 Example: