Two more small fixes

Author: BonsaiDen

doc/constructors.md

@@ -9,8 +9,8 @@ set to the `prototype` of the function object that was called.
 
 If the function that was called has no explicit `return` statement, then it
 implicitly returns the value of `this` (the new object). Otherwise it returns
-the value of the `return` statement, **but** only if `typeof returnValue` is
-`object`.
+the value of the `return` statement, **but** only if the return value is an
+object.
 
     function Foo() {
         this.bla = 1;

doc/typeof.md

@@ -5,7 +5,8 @@ The `typeof` operator (together with
 design flaw of JavaScript, as it is near of being **completely broken**.
 
 Although `instanceof` still has its limited uses, `typeof` really has only one
-practical use case, which **not happens** to be checking the type of an object. 
+practical use case, which does **not** happen to be checking the type of an 
+object. 
 
 > **Note:** While `typeof` can also be called with a function like syntax
 > i.e. `typeof(obj)`, this is not a function call. The two parenthesis will