fix: flutter replay variable names (#11777)

Author: vaind

docs/platforms/flutter/session-replay/index.mdx

@@ -44,22 +44,19 @@ await SentryFlutter.init(
 
 ## Verify
 
-While you're testing, we recommend that you set <PlatformIdentifier name="replays-session-sample-rate" /> to `1.0`. This ensures that every user session will be sent to Sentry.
+While you're testing, we recommend that you set `sessionSampleRate` to `1.0`. This ensures that every user session will be sent to Sentry.
 
-Once testing is complete, **we recommend lowering this value in production**. We still recommend keeping <PlatformIdentifier name="replays-on-error-sample-rate" /> set to `1.0`.
+Once testing is complete, **we recommend lowering this value in production**. We still recommend keeping `onErrorSampleRate` set to `1.0`.
 
 ## Sampling
 
 Sampling allows you to control how much of your website's traffic will result in a Session Replay. There are two sample rates you can adjust to get the replays relevant to you:
 
-1. <PlatformIdentifier name="replays-session-sample-rate" /> - The sample rate for
-   replays that begin recording immediately and last the entirety of a user's session.
-2. <PlatformIdentifier name="replays-on-error-sample-rate" /> - The sample rate for
-   replays that are recorded when an error happens. This type of replay will record
-   up to a minute of events prior to the error and continue recording until the session
-   ends.
+1. `sessionSampleRate` - The sample rate for replays that begin recording immediately and last the entirety of a user's session.
+2. `onErrorSampleRate` - The sample rate for replays that are recorded when an error happens. This type of replay will record
+   up to a minute of events prior to the error and continue recording until the session ends.
 
-Sampling starts as soon as a session begins. The <PlatformIdentifier name="replays-session-sample-rate" /> is then evaluated. If the session is sampled, replay recording will start immediately. If not, <PlatformIdentifier name="replays-on-error-sample-rate" /> will be evaluated. If the session is sampled at this point, the replay will be buffered and will only be uploaded to Sentry if an error occurs.
+Sampling starts as soon as a session begins. The `sessionSampleRate` is then evaluated. If the session is sampled, replay recording will start immediately. If not, `onErrorSampleRate` will be evaluated. If the session is sampled at this point, the replay will be buffered and will only be uploaded to Sentry if an error occurs.
 
 ## Privacy