Update options.mdx with RequestSize.None valid value (#12084)

Author: vashov

docs/platforms/dotnet/common/configuration/options.mdx

@@ -175,7 +175,7 @@ This option can be overridden using <PlatformIdentifier name="in-app-include" />
 
 This parameter controls whether integrations should capture HTTP request bodies. It can be set to one of the following values:
 
-- `never`: Request bodies are never sent.
+- `none`: Request bodies are never sent.
 - `small`: Only small request bodies will be captured. The cutoff for small depends on the SDK (typically 4KB).
 - `medium`: Medium and small requests will be captured (typically 10KB).
 - `always`: The SDK will always capture the request body as long as Sentry can make sense of it.