Update 1-Authentication/1-sign-in/README.md

white space

Co-authored-by: Doğan Erişen <dogan.erisen@gmail.com>

Author: salman90

1-Authentication/1-sign-in/README.md

@@ -306,7 +306,6 @@ This project has adopted the [Microsoft Open Source Code of Conduct](https://ope
 * [Authentication Scenarios for Azure AD](https://docs.microsoft.com/azure/active-directory/develop/authentication-flows-app-scenarios)
 * [Building Zero Trust ready apps](https://aka.ms/ztdevsession)
 * [National Clouds](https://docs.microsoft.com/azure/active-directory/develop/authentication-national-cloud#app-registration-endpoints)
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 * [Initialize client applications using MSAL.js](https://docs.microsoft.com/azure/active-directory/develop/msal-js-initializing-client-applications)
 * [Single sign-on with MSAL.js](https://docs.microsoft.com/azure/active-directory/develop/msal-js-sso)
 * [Handle MSAL.js exceptions and errors](https://docs.microsoft.com/azure/active-directory/develop/msal-handling-exceptions?tabs=javascript)