[102] Spaces after TODOs

Author: tianlunlee

mdc_100_series/lib/home.dart

@@ -15,11 +15,11 @@
 import 'package:flutter/material.dart';
 
 class HomePage extends StatelessWidget {
-  //TODO: Insert function to build grid cards (102)
+  // TODO: Insert function to build grid cards (102)
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      //TODO: Add app bar (102)
+      // TODO: Add app bar (102)
       // TODO: Add a grid view (102)
       body: Center(
         // TODO: Pass context to grid cards (102)