ref(flags): update versioning note and link generic provider in JS index

Author: aliu39

docs/platforms/javascript/common/feature-flags/index.mdx

@@ -26,12 +26,13 @@ description: With Feature Flags, Sentry tracks feature flag evaluations in your
 
 ## Prerequisites
 
-* You have the <PlatformLink to="/">JavaScript SDK installed</PlatformLink> (version 8.41.0-beta.1).
+* You have the <PlatformLink to="/">JavaScript SDK installed</PlatformLink> (version 8.43.0 or higher).
 
 ## Enable Evaluation Tracking
 
 Evaluation tracking requires enabling an SDK integration. Integrations are provider specific. Documentation for supported providers is listed below.
 - [OpenFeature](/platforms/javascript/configuration/integrations/openfeature/)
 - [LaunchDarkly](/platforms/javascript/configuration/integrations/launchdarkly/)
+- [Generic](/platforms/javascript/configuration/integrations/featureflags/) (Manually track evaluations through an API)
 
 <PlatformContent includePath="feature-flags/enable-change-tracking" />