qns: fix typo

Author: yangshun

questions/explain-hoisting/en-US.mdx

@@ -29,7 +29,7 @@ The following behavior summarizes the result of accessing the variables before t
 
 ## Hoisting
 
-Hoisting is a term used to explain the behavior of variable declarations in JavaScript code. 
+Hoisting is a term used to explain the behavior of variable declarations in JavaScript code.
 
 Variables declared or initialized with the `var` keyword will have their declaration "moved" up to the top of their containing scope during compilation, which we refer to as hoisting.
 
@@ -124,7 +124,7 @@ In ECMAScript specifications `let` and `const` declarations are [explained as be
 
 > The variables are created when their containing Environment Record is instantiated but may not be accessed in any way until the variable's LexicalBinding is evaluated.
 
-However, this statement is [a litle bit different for the `var` keyword](https://tc39.es/ecma262/#sec-variable-statement):
+However, this statement is [a little different for the `var` keyword](https://tc39.es/ecma262/#sec-variable-statement):
 
 > Var variables are created when their containing Environment Record is instantiated and are initialized to `undefined` when created.