ref: Update BrowserTracing options description

Author: Lms24

src/platforms/javascript/common/performance/instrumentation/automatic-instrumentation.mdx

@@ -72,10 +72,16 @@ This function can be used to filter out unwanted spans such as XHR's running hea
 
 ### idleTimeout
 
-The idle time, measured in ms, to wait until the transaction will be finished. The transaction will use the end timestamp of the last finished span as the endtime for the transaction.
+The idle time, measured in ms, to wait until the transaction will be finished, if there are no unfinished spans. The transaction will use the end timestamp of the last finished span as the endtime for the transaction.
 
 The default is `1000`.
 
+### finalTimeout
+
+The maximum duration of the transaction, measured in ms. If the transaction duration hits the `finalTimeout` value, it will be finished.
+
+The default is `30000`.
+
 ### startTransactionOnLocationChange
 
 This flag enables or disables creation of `navigation` transaction on history changes.
@@ -88,31 +94,25 @@ This flag enables or disables creation of `pageload` transaction on first pagelo
 
 The default is `true`.
 
-### maxTransactionDuration
-
-The maximum duration of a transaction, measured in seconds, before it will be marked as "deadline_exceeded". If you never want transactions marked that way, set `maxTransactionDuration` to 0.
-
-The default is `600`.
-
 ### markBackgroundTransactions
 
 This option flags transactions when tabs are moved to the background with "cancelled". Because browser background tab timing is not suited for precise measurements of operations and can affect your statistics in nondeterministic ways, we recommend that this option be enabled.
 
 The default is `true`.
 
+### \_experiments
 
-### _experiments
-
-This is an object containing experimental flags for features that may involve breaking changes that haven't yet landed in a new major version. 
+This is an object containing experimental flags for features that may involve breaking changes that haven't yet landed in a new major version.
 
 The default is
+
 ```
 {
   enableLongTasks: true
 }
 ```
 
-#### _experiments.enableLongTasks
+#### \_experiments.enableLongTasks
 
 This experimental option determines whether spans for long tasks automatically get created.