fix docs

Author: mitchellhenke

lib/sentry.ex

@@ -54,7 +54,7 @@ defmodule Sentry do
   If you would like to prevent certain exceptions, the `:filter` configuration option
   allows you to implement the `Sentry.EventFilter` behaviour.  The first argument is the
   exception to be sent, and the second is the source of the event.  `Sentry.Plug`
-  will have a source of `:plug`, `Sentry.Logger` will have a source of `:logger`, and `Sentry.Phoenix.Endpoint` will have a source of `:endpoint`.
+  will have a source of `:plug`, `Sentry.LoggerBackend` will have a source of `:logger`, and `Sentry.Phoenix.Endpoint` will have a source of `:endpoint`.
   If an exception does not come from either of those sources, the source will be nil
   unless the `:event_source` option is passed to `Sentry.capture_exception/2`
 
@@ -88,7 +88,7 @@ defmodule Sentry do
 
   ## Configuring The `Logger` Backend
 
-  See `Sentry.Logger`
+  See `Sentry.LoggerBackend`
   """
 
   @type send_result :: Sentry.Client.send_event_result() | :excluded | :ignored