Update bannerImpl.md

Author: DeveloperTryingToCodeLikeOtherOfThem

docs/developers/bannerImpl.md

@@ -1,7 +1,6 @@
 ## Warning Banners Implementation
 The implementation of the warning banners are implemented in few steps, which first are implemented in the `pushNotificationMessage` function.
-The function then pushes a new message into the stack and renders it with a notification initalized boolean.
-
+The function then pushes a new message into the stack and renders it with a notification initalized boolean:
 ``` ts
 export function pushNotificationMessage(options: NotificationOptions): void {
     if (!notificationsInitialized) {
@@ -16,13 +15,13 @@ export function pushNotificationMessage(options: NotificationOptions): void {
 ```
 [pushNotificationMessage Implementation](https://github.com/microsoft/pxt/blob/master/react-common/components/Notification.tsx#L73-L82)
 
-It then processes into the warning notification function, which gets passed by pushNotificationMessage. 
+It then processes into the warning notification function, which gets passed by pushNotificationMessage:
 ``` ts
 function showNotificationMsg(kind: string, msg: string) {
     pushNotificationMessage({ kind: kind, text: msg, hc: false }); // No high contrast support in skillmap
 }
 ```
-And then all these steps get executed by `showNotificationMsg`.  Finally, these functions then are called in `errorNotification` and `warningNotification.`
+And then all these steps get executed by `showNotificationMsg`.  Finally, these functions then are called in `errorNotification` and `warningNotification`:
 
 ``` ts
 export function errorNotification(msg: string) {