added excel sheet link

lib/constants.dart

@@ -41,3 +41,5 @@ Widget newNoMenuWidget = Center(
 );
 
 Uri ghURI = Uri.parse("https://github.com/kphanipavan/IIITB_Menu");
+Uri excelSheetURI = Uri.parse(
+    "https://iiitbac-my.sharepoint.com/:x:/g/personal/foodcommittee_iiitb_ac_in/ESrcRZMPYFpOgk2VEPd0zd8BDfsMkTUXWM4hRi-2QNF44g?e=fjFkFy");

lib/views/about.dart

@@ -1,6 +1,7 @@
 import 'package:flutter/material.dart';
 import "package:iiitb_menu/constants.dart";
 import "package:url_launcher/url_launcher.dart";
+import "package:iiitb_menu/widgets/linkButton.dart";
 
 class AboutPage extends StatelessWidget {
   const AboutPage({Key? key}) : super(key: key);
@@ -33,14 +34,13 @@ class AboutPage extends StatelessWidget {
             child: Text(
                 "Menu updates every other Tuesday or when FoodComm does it."),
           ),
-          InkWell(
-              child:
-                  const Image(image: AssetImage("assets/gh.png"), height: 20),
-              onTap: () async {
-                if (await canLaunchUrl(ghURI)) {
-                  launchUrl(ghURI);
-                }
-              }),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              LinkButton(iconImage: "assets/gh.png", link: ghURI),
+              LinkButton(iconImage: "assets/excel.png", link: excelSheetURI),
+            ],
+          ),
         ],
       ),
     );

lib/widgets/linkButton.dart

@@ -0,0 +1,25 @@
+import "package:flutter/material.dart";
+import "package:url_launcher/url_launcher.dart";
+
+class LinkButton extends StatelessWidget {
+  final Uri link;
+  final String iconImage;
+  final double height;
+  const LinkButton(
+      {Key? key, required this.link, required this.iconImage, this.height = 30})
+      : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: const EdgeInsets.all(8.0),
+      child: InkWell(
+          child: Image(image: AssetImage(iconImage), height: height),
+          onTap: () async {
+            if (await canLaunchUrl(link)) {
+              launchUrl(link);
+            }
+          }),
+    );
+  }
+}