docs(dotnet): enable api response assertions (#16799)

docs/src/api/class-apiresponseassertions.md

@@ -1,6 +1,5 @@
 # class: APIResponseAssertions
 * since: v1.18
-* langs: js, java, python
 
 The [APIResponseAssertions] class provides assertion methods that can be used to make assertions about the [APIResponse] in the tests. A new instance of [APIResponseAssertions] is created by calling [`method: PlaywrightAssertions.expectAPIResponse`]:
 
@@ -50,7 +49,7 @@ def test_navigates_to_login_page(page: Page) -> None:
 
 ## property: APIResponseAssertions.not
 * since: v1.20
-* langs: java, js
+* langs: java, js, csharp
 - returns: <[APIResponseAssertions]>
 
 Makes the assertion check for the opposite condition. For example, this code tests that the response status is not successful:
@@ -74,7 +73,7 @@ The opposite of [`method: APIResponseAssertions.toBeOK`].
 * langs:
   - alias-java: isOK
 
-Ensures the response status code is within [200..299] range.
+Ensures the response status code is within `200..299` range.
 
 ```js
 await expect(response).toBeOK();

docs/src/api/class-playwrightassertions.md

@@ -74,7 +74,7 @@ By default, the timeout for assertions is set to 5 seconds.
 
 ## method: PlaywrightAssertions.expectAPIResponse
 * since: v1.18
-* langs: js, java, python
+* langs:
   - alias-java: assertThat
   - alias-python: expect
   - alias-js: expect

packages/playwright-test/types/test.d.ts

@@ -3180,7 +3180,7 @@ interface APIResponseAssertions {
   not: APIResponseAssertions;
 
   /**
-   * Ensures the response status code is within [200..299] range.
+   * Ensures the response status code is within `200..299` range.
    *
    * ```js
    * await expect(response).toBeOK();