task: update the readme documentation to point to msal
task: update the readme documentation to point to msal

- Update the readme on adal for node.js to point to msal.js for node.js

AzureAD/azure-activedirectory-library-for-nodejs,AzureAD/azure-activedirectory-library-for-nodejs,AzureAD/azure-activedirectory-library-for-nodejs