Update legacy-pricing.mdx with FAQ link (#13396)

Author: souredoutlook

docs/pricing/legacy-pricing.mdx

@@ -82,8 +82,7 @@ Depending on how you've configured profiling in your SDK, you will either be sen
 <Alert>
   To understand more about profiling configuration and migration from
   Transactions with Profiling to Continuous or UI Profiling, please see this
-  [FAQ.](/)
-  {/* TODO: Add link to FAQ */}
+  [FAQ.](https://sentry.zendesk.com/hc/en-us/articles/36024865135131)
 </Alert>
 
 Profile hours are determined by the length of the profile in milliseconds and is billed in hours. Partial hours are prorated and rounded down to the nearest cent. Profile Hours are only available through your Pay-as-you-go (PAYG) budget.