.Net: Fix formatting errors in the schema files (#8493)

### Motivation and Context

Fix PR build failures

### Description

<!-- Describe your changes, the overall approach, the underlying design.
These notes will help understanding how your code works. Thanks! -->

### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [ ] The code builds clean without any errors or warnings
- [ ] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [ ] All unit tests pass, and I have added new tests where possible
- [ ] I didn't break anyone 😄

dotnet/src/InternalUtilities/src/Schema/JsonSchemaGenerationContext.cs

@@ -8,9 +8,9 @@
 
 namespace JsonSchemaMapper;
 
-    /// <summary>
-    /// Defines the context in which a JSON schema within a type graph is being generated.
-    /// </summary>
+/// <summary>
+/// Defines the context in which a JSON schema within a type graph is being generated.
+/// </summary>
 #if EXPOSE_JSON_SCHEMA_MAPPER
 public
 #else

dotnet/src/InternalUtilities/src/Schema/JsonSchemaMapper.cs

@@ -42,7 +42,7 @@ public static JsonNode GetJsonSchema(this JsonSerializerOptions options, Type ty
     {
         if (options is null)
         {
-           ThrowHelpers.ThrowArgumentNullException(nameof(options));
+            ThrowHelpers.ThrowArgumentNullException(nameof(options));
         }
 
         if (type is null)