Update quickstart version

Author: jasonjoh

demo/graph-tutorial/example.env

@@ -1,5 +1,5 @@
 OAUTH_APP_ID=YOUR_APP_ID_HERE
-OAUTH_APP_SECRET=YOUR_CLIENT_SECRET_HERE
+OAUTH_APP_SECRET='YOUR_CLIENT_SECRET_HERE'
 OAUTH_REDIRECT_URI=http://localhost:3000/auth/callback
 OAUTH_SCOPES='user.read,calendars.readwrite,mailboxsettings.read'
 OAUTH_AUTHORITY=https://login.microsoftonline.com/common/

qs.json

@@ -1,7 +1,7 @@
 {
-  "sourceDirectory": ".\\demo",
-  "exampleConfigFile": ".\\graph-tutorial\\example.env",
+  "sourceDirectory": "./demo",
+  "exampleConfigFile": "./graph-tutorial/example.env",
   "configFile": ".env",
   "archiveFile": "NodeExpressQuickStart.zip",
-  "zipReadMe": ".\\README.md"
-}
+  "zipReadMe": "./README.md"
+}