Add integrations info to default config page (#15198)

I added the integration configs in parentheses so that users don't have to click through 25 different pages to gather this same info - they could just copy/paste from here. 

Got the idea from the [demo integration page](https://www.home-assistant.io/integrations/demo/) and thought it might be useful here too.

source/_integrations/default_config.markdown

@@ -9,31 +9,31 @@ ha_domain: default_config
 
 This integration is a meta-component and configures a default set of integrations for Home Assistant to load. The integrations that will be loaded are:
 
-- [Automation](/integrations/automation/)
+- [Automation](/integrations/automation/) (`automation`)
-- [Home Assistant Cloud](/integrations/cloud/)
+- [Home Assistant Cloud](/integrations/cloud/) (`cloud`)
-- [Configuration](/integrations/config/)
+- [Configuration](/integrations/config/) (`config`)
-- [Frontend](/integrations/frontend/)
+- [Frontend](/integrations/frontend/) (`frontend`)
-- [History](/integrations/history/)
+- [History](/integrations/history/) (`history`)
-- [Image](/integrations/image/)
+- [Image](/integrations/image/) (`image`)
-- [Input boolean](/integrations/input_boolean)
+- [Input boolean](/integrations/input_boolean/) (`input_boolean`)
-- [Input datetime](/integrations/input_datetime)
+- [Input datetime](/integrations/input_datetime/) (`input_datetime`)
-- [Input number](/integrations/input_number)
+- [Input number](/integrations/input_number/) (`input_number`)
-- [Input select](/integrations/input_select)
+- [Input select](/integrations/input_select/) (`input_select`)
-- [Input text](/integrations/input_text)
+- [Input text](/integrations/input_text/) (`input_text`)
-- [Logbook](/integrations/logbook/)
+- [Logbook](/integrations/logbook/) (`logbook`)
-- [Map](/integrations/map/)
+- [Map](/integrations/map/) (`map`)
-- [Media Source](/integrations/media_source/)
+- [Media Source](/integrations/media_source/) (`media_source`)
-- [Mobile App Support](/integrations/mobile_app/)
+- [Mobile App Support](/integrations/mobile_app/) (`mobile_app`)
-- [Person](/integrations/person/)
+- [Person](/integrations/person/) (`person`)
-- [Scene](/integrations/scene/)
+- [Scene](/integrations/scene/) (`scene`)
-- [Scripts](/integrations/script/)
+- [Scripts](/integrations/script/) (`script`)
-- [Simple Service Discovery Protocol (SSDP)](/integrations/ssdp/)
+- [Simple Service Discovery Protocol (SSDP)](/integrations/ssdp/) (`ssdp`)
-- [Sun](/integrations/sun/)
+- [Sun](/integrations/sun/) (`sun`)
-- [System Health](/integrations/system_health/)
+- [System Health](/integrations/system_health/) (`system_health`)
-- [Tag](/integrations/tag/)
+- [Tag](/integrations/tag/) (`tag`)
-- [Updater](/integrations/updater/)
+- [Updater](/integrations/updater/) (`updater`)
-- [Zero-configuration networking (zeroconf)](/integrations/zeroconf/)
+- [Zero-configuration networking (zeroconf)](/integrations/zeroconf/) (`zeroconf`)
-- [Zone](/integrations/zone)
+- [Zone](/integrations/zone/) (`zone`)
 
 ## Configuration