Fix Tracing doc

Author: mariedm

content/en/tracing/trace_collection/dd_libraries/ios.md

@@ -508,7 +508,7 @@ DDTraceConfiguration *configuration = [[DDTraceConfiguration] alloc] init];
 {{< /tabs >}}
 This automatically traces all requests to `example.com` and `api.yourdomain.com` hosts (for example, `https://api.yourdomain.com/v2/users` or `https://subdomain.example.com/image.png`).
 
-    _(Optional)_ For **more accurate trace timings** with detailed timing breakdown (DNS resolution, SSL handshake, time to first byte, connection time, download duration), enable `URLSessionInstrumentation` for your delegate type:
+    _(Optional)_ Trace timings are more accurate when enabling `URLSessionInstrumentation` for your delegate type:
 
 {{< tabs >}}
 {{% tab "Swift" %}}
@@ -538,7 +538,7 @@ NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConf
 {{% /tab %}}
 {{< /tabs >}}
 
-    **Notes**:
+**Notes**:
     - Tracing auto-instrumentation uses `URLSession` swizzling and is opt-in. If you do not specify `urlSessionTracking` and `firstPartyHosts` configurations, swizzling is not applied.
     - Tracing works automatically without `URLSessionInstrumentation`, but trace timings are more accurate after enabling it.