fix typo

Author: sentrivana

docs/platforms/python/integrations/aiohttp/index__v3.x.mdx

@@ -75,7 +75,7 @@ A set of predefined span attributes will be attached to AIOHTTP transactions by
 - `server.address`
 - `server.port`
 
-These attributes will also be sent to Sentry. If you don't want that, you can filter them out using a custom [`traces_sampler`](/platforms/python/configuration/options/#before_send) function.
+These attributes will also be sent to Sentry. If you don't want that, you can filter them out using a custom [`before_send`](/platforms/python/configuration/options/#before_send) function.
 
 ## Options