Rename asterisk-do service to asterisk-digital-ocean

Renamed services/asterisk-do.sh -> services/asterisk-digital-ocean.sh
(register_service name, install function, install dir, and all prose/
comments) so the whiptail menu shows a clearer, more discoverable name.

Updated the functional cross-references that depend on the old name:
crowdsec.sh's SIP-log auto-detection path and acquisition filename,
caddy.sh's host.docker.internal comment, and the CLAUDE.md/README.md
docs (services table, directory listing, network-wiring example).

Container names, the Docker Compose project name, and the internal
_asterisk_do_* helper function identifiers are left unchanged since
they aren't user-facing and renaming them would add risk for no
benefit.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015X1jRGHwrvovz2qkhKfDZi

services/caddy.sh

@@ -268,7 +268,7 @@ services:
     labels:
       - "io.podman.annotations.label/crowdsec.enable=true"
     # Lets Caddyfile blocks reach services that use network_mode: host
-    # (e.g. asterisk/asterisk-do) via "host.docker.internal:PORT" — Caddy
+    # (e.g. asterisk/asterisk-digital-ocean) via "host.docker.internal:PORT" — Caddy
     # itself is on the caddy_net bridge network below, so plain "localhost"
     # in a site block resolves to Caddy's own container, not the host.
     extra_hosts: