feat(apple): How to investigate HTTP client errors (#12879)

Explain that the stacktrace of HTTP client errors can be bogus
and what to check instead.

docs/platforms/apple/common/configuration/http-client-errors.mdx

@@ -4,7 +4,8 @@ sidebar_order: 13
 description: "This feature, once enabled, automatically captures HTTP client errors, like bad response codes, as error events and reports them to Sentry"
 ---
 
-Once enabled, this feature automatically captures HTTP client errors, like bad response codes, as error events and reports them to Sentry. The error event will contain the `request` and `response` data, such as `url`, `status_code`, and so on.
+Once enabled, this feature automatically captures HTTP client errors, like bad response codes, as error events and reports them to Sentry. The error event will contain the `request` and `response` data, such as `url`, `status_code`, and so on. Depending on your HTTP request setup, it can happen that the stacktrace of these events doesn't pinpoint the exact location of the HTTP request in your code. If that's the case, you can look at the HTTP request info of the issue, which contains things like URL and HTTP headers.
+
 
 Since 8.0.0, this feature has been enabled by default. To disable it: