Update Introduction.md

Author: ankurjuneja

ReactJs/Introduction.md

@@ -12,13 +12,13 @@ JSX allows you to mix HTML and JavaScript.
 
 Simple example:
 ```
-class App extends React.component {          //ES6 Class Component Declaration
-  const value = 'Hello World!';              //A variable declared const cannot be re-declared or re-assigned..
-                                             //It cannot get mutated(changed,modified). use let for reassignment.
-  render() {                                 //lifecycle method to describe what needs to appear on the UI
+class App extends React.component {       //ES6 Class Component Declaration
+  const value = 'Hello World!';           //A variable declared const cannot be re-declared or re-assigned..
+                                          //It cannot get mutated(changed,modified). use let for reassignment.
+  render() {                              //lifecycle method to describe what needs to appear on the UI
     return(
       <div className = "App">
-        <h2>{value}</h2>                     //JSX is used for displaying value. Its curly brackets.
+        <h2>{value}</h2>                  //JSX is used for displaying value. Its curly brackets.
        </div>
     );
   }