Audio management: Fix incorrect path for WirePlumber sample

WirePlumber config files are located under `/etc/wireplumber/...`.

Signed-off-by: Frédéric Danis <frederic.danis@collabora.com>

content/concepts/audio-management.md

@@ -588,7 +588,7 @@ The Lua API Documentation can be found
 [here](https://pipewire.pages.freedesktop.org/wireplumber/lua_api.html).
 
 The default roles, priorities and related actions are defined in
-`/etc/wireconfig/policy.lua.d/50-endpoints-config.lua` and
+`/etc/wireplumber/policy.lua.d/50-endpoints-config.lua` and
 can be re-written to support the standalone setup defined in
 [Routing data structure example]( {{< ref "#routing-data-structure-example" >}} ):
 ```