Fix question 34

Author: lydiahallie

README.md

@@ -1042,7 +1042,6 @@ typeof sayHi();
 The `sayHi` function returns the returned value of the immediately invoked function (IIFE). This function returned `0`, which is type `"number"`.
 
 FYI: there are only 7 built-in types: `null`, `undefined`, `boolean`, `number`, `string`, `object`, and `symbol`. `"function"` is not a type, since functions are objects, it's of type `"object"`.
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 </p>
 </details>