Improve documentation for App Registration regarding multi-tenant configuration

[serverless-me]

Sample

tab-aad-msal2

Authors

@BobGerman

Suggestion (the more details, the better)

App Registration

Please add the following detail to the documentation

• SPA Redirect URI (not Web Redirect URI)
• no implicit grant
• optional: select the multi-tenant option

Code Changes

For the multi-tenant configuration, the following changes are required:

• use the common endpoint in the Config.js instead of the tenant ID
  export const authority = "https://login.microsoftonline.com/common";

• to the request I added the extraQueryParameters: {domain_hint: 'organizations'}
  this.request = { scopes: ["user.read"], extraQueryParameters: {domain_hint: 'organizations'} }