Update lib/msal-browser/docs/performance.md
Update lib/msal-browser/docs/performance.md

Co-authored-by: Hector Morales <3245a9af5f3d4821e24b2c26180e7c49323395ee@microsoft.com>
AzureAD/microsoft-authentication-library-for-js,AzureAD/microsoft-authentication-library-for-js,AzureAD/microsoft-authentication-library-for-js,AzureAD/microsoft-authentication-library-for-js,AzureAD/microsoft-authentication-library-for-js,AzureAD/microsoft-authentication-library-for-js,AzureAD/microsoft-authentication-library-for-js,AzureAD/microsoft-authentication-library-for-js