fix(mdns): move the example into a subdirectory

By default, component manager expects that the examples are located
under <component>/examples/<name>. Move mdns example so that it is
found.

components/mdns/examples/query_advertise/CMakeLists.txt

@@ -3,4 +3,4 @@
 cmake_minimum_required(VERSION 3.5)
 
 include($ENV{IDF_PATH}/tools/cmake/project.cmake)
-project(mdns_test)
+project(query_advertise)

components/mdns/examples/query_advertise/README.md

@@ -1,6 +1,6 @@
 # mDNS example
 
-Shows how to use mDNS to advertise lookup services and hosts
+Shows how to use mDNS to advertise and query services and hosts
 
 ## Example workflow
 

components/mdns/examples/query_advertise/main/idf_component.yml

@@ -3,5 +3,6 @@ dependencies:
   idf: ">=5.0"
   espressif/mdns:
     version: "^1.0.0"
+    override_path: "../../../"
   protocol_examples_common:
     path: ${IDF_PATH}/examples/common_components/protocol_examples_common