chore: docs fix (#872)

docs/Authentication.md

@@ -142,6 +142,7 @@ work.
       }
     ]
   }
+}
 ```
 
 ## Other Authentication Options
@@ -161,8 +162,12 @@ builder.Services.AddMultiTenant<TenantInfo>()
         .WithRouteStrategy()
         .WithPerTenantAuthentication()
 
-// WithPerTenantAuthentication, as shown above, is needed for this to work as intended
-builder.Services.ConfigurePerTenant<JwtBearerOptions, TenantInfo>((options, tenantInfo) =>
+// WithPerTenantAuthentication, as shown above, is needed for this to work as intended.
+// Note the default JwtBearer authentication scheme is used for the options name per AspNetCore defauls,
+// but you can use a custom authentication scheme name to scope the options or use ConfigureAllPerTenant
+// to impact all authentication schemes.
+builder.Services.ConfigurePerTenant<JwtBearerOptions, TenantInfo>(JwtBearerDefaults.AuthenticationScheme, (options, 
+tenantInfo) =>
     {
         // assume tenants are configured with an authority string to use here.
         options.Authority = tenantInfo.JwtAuthority;