Fixes chat image links to reflect html base.

react/features/chat/components/ChatInput.web.js

                         <div id = 'smileys'>
                             <img
                                 onClick = { this._onToggleSmileysPanel }
-                                src = '../../../../images/smile.svg' />
+                                src = 'images/smile.svg' />
                         </div>
                     </div>
                     <div className = { smileysPanelClassName }>

react/features/chat/components/ChatMessage.web.js

             <div className = { `chatmessage ${messageTypeClassname}` }>
                 <img
                     className = 'chatArrow'
-                    src = '../../../../images/chatArrow.svg' />
+                    src = 'images/chatArrow.svg' />
                 <div className = 'display-name'>
                     { message.displayName }
                 </div>