Update docs/configuring-dns.md: fix the anchor link to rageshake documentation

The issue was introduced with ea6e879487

Signed-off-by: Suguru Hirahara <acioustick@noreply.codeberg.org>

docs/configuring-dns.md

@@ -56,7 +56,7 @@ For other services which may need subdomain settings, see the table below and co
 | [SchildiChat Web](configuring-playbook-client-schildichat-web.md) client                                                   | CNAME | `schildichat`                  | -        | -      | -    | `matrix.example.com`               |
 | [wsproxy](configuring-playbook-bridge-mautrix-wsproxy.md) sms bridge                                                       | CNAME | `wsproxy`                      | -        | -      | -    | `matrix.example.com`               |
 | [Buscarron](configuring-playbook-bot-buscarron.md) helpdesk bot                                                            | CNAME | `buscarron`                    | -        | -      | -    | `matrix.example.com`               |
-| [rageshake](docs/configuring-playbook-rageshake.md) bug report server                                                      | CNAME | `rageshake`                    | -        | -      | -    | `matrix.example.com`               |
+| [rageshake](configuring-playbook-rageshake.md) bug report server                                                           | CNAME | `rageshake`                    | -        | -      | -    | `matrix.example.com`               |
 | [ma1sd](configuring-playbook-ma1sd.md) identity server                                                                     | SRV   | `_matrix-identity._tcp`        | 10       | 0      | 443  | `matrix.example.com`               |
 | [Postmoogle](configuring-playbook-bridge-postmoogle.md)/[Email2Matrix](configuring-playbook-email2matrix.md) email bridges | MX    | `matrix`                       | 10       | 0      | -    | `matrix.example.com`               |
 | [Postmoogle](configuring-playbook-bridge-postmoogle.md) email bridge                                                       | TXT   | `matrix`                       | -        | -      | -    | `v=spf1 ip4:matrix-server-IP -all` |