M48564 - Fixing Typo (#17597)

* M48564 - Fixing Typo

Translator has reported possible content source issue.
Description> Adding missing parenthesis
Affected Line> 160

* minor edit

Co-authored-by: Scott Addie <10702007+scottaddie@users.noreply.github.com>

Author: V-vafune

aspnetcore/fundamentals/app-state.md

@@ -157,7 +157,7 @@ The following example shows how to set and get an integer and a string:
 
 [!code-csharp[](app-state/samples/3.x/SessionSample/Pages/Index.cshtml.cs?name=snippet1&highlight=18-19,22-23)]
 
-All session data must be serialized to enable a distributed cache scenario, even when using the in-memory cache. String and integer serializers are provided by the extension methods of [ISession](/dotnet/api/microsoft.aspnetcore.http.isession)). Complex types must be serialized by the user using another mechanism, such as JSON.
+All session data must be serialized to enable a distributed cache scenario, even when using the in-memory cache. String and integer serializers are provided by the extension methods of [ISession](/dotnet/api/microsoft.aspnetcore.http.isession). Complex types must be serialized by the user using another mechanism, such as JSON.
 
 Use the following sample code to serialize objects: