fix typo

src/components/HTTPResponseView.jsx

@@ -86,7 +86,7 @@ class Component extends PureComponent {
     return (
       <Panel eventKey="1" defaultExpanded={true}>
         <Panel.Heading className={"panel-title"}>
-          HTTP Reponse
+          HTTP Response
         </Panel.Heading>
         <Panel.Body>
           <div>