fix typo in config.md

docs/config.md

@@ -173,7 +173,7 @@ This section is used to configure Pleroma-FE, unless ``:managed_config`` in ``:i
 
 ## :mrf_keyword
 * `reject`: A list of patterns which result in message being rejected, each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html)
-* `federated_timeline_removal`: A list of patterns which result in message being removed from federated timelines(a.k.a unlisted), each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html)
+* `federated_timeline_removal`: A list of patterns which result in message being removed from federated timelines (a.k.a unlisted), each pattern can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html)
 * `replace`: A list of tuples containing `{pattern, replacement`, `pattern` can be a string or a [regular expression](https://hexdocs.pm/elixir/Regex.html)
 
 ## :media_proxy