Fix coding style in docs/iterator.md

docs/iterator.md

@@ -37,7 +37,7 @@ function makeIterator(array){
         {value: array[nextIndex++], done: false} :
         {value: undefined, done: true};
     }
-  }
+  };
 }
 ```
 
@@ -60,7 +60,7 @@ function makeIterator(array){
         {value: array[nextIndex++]} :
         {done: true};
     }
-  }
+  };
 }
 ```
 
@@ -81,7 +81,7 @@ function idMaker(){
     next: function() {
       return {value: index++, done: false};
     }
-  }
+  };
 }
 ```
 
@@ -186,11 +186,11 @@ Obj.prototype[Symbol.iterator] = function(){
       return {
         done: done,
         value: value
-      }
+      };
     } else {
       return {
         done: true
-      }
+      };
     }
   }
   return iterator;
@@ -204,7 +204,7 @@ one.next = two;
 two.next = three;
 
 for (var i of one){
-  console.log(i)
+  console.log(i);
 }
 // 1
 // 2