docs: fix mixed tab/space indentation in Caddy config example

Assisted-by: Claude Opus 4.6 via Copilot
Signed-off-by: Mozi <[email protected]>

Author: pzhlkj6612

docs/docs/CHANGELOG.md

@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+- Fixed mixed tab/space indentation in Caddy documentation code block
+
 <!-- This changes the project to: -->
 
 ## v1.25.0: Necron

docs/docs/admin/environments/caddy.mdx

@@ -62,9 +62,9 @@ yourdomain.example.com {
   tls [email protected]
 
   reverse_proxy http://anubis:3000 {
-		header_up X-Real-Ip {remote_host}
-		header_up X-Http-Version {http.request.proto}
-	}
+    header_up X-Real-Ip {remote_host}
+    header_up X-Http-Version {http.request.proto}
+  }
 }
 ```