chore(docker-compose): Update Teslamate network name for Home Assistant

The external network name for Teslamate was updated from `teslamate-internal`
to `teslamate_teslamate-internal` in the Home Assistant docker-compose.yml.
This change ensures Home Assistant correctly connects to the Teslamate
internal network, aligning with Docker Compose's default naming convention
for networks created by other Compose projects.

homeassistant/docker-compose.yml

@@ -5,7 +5,7 @@ services:
 #    network_mode: host
     networks:
       - pangolin-home
-      - teslamate-internal
+      - teslamate_teslamate-internal
     environment:
       - PUID=1000
       - PGID=1000
@@ -25,5 +25,5 @@ services:
 networks:
   pangolin-home:
     external: true
-  teslamate-internal:
+  teslamate_teslamate-internal:
     external: true