Services-Personas: fix INI subsection header format to match loader

Service-Personas.md

@@ -12,8 +12,10 @@ See also:
 - [Custom services](Custom-Services) — BYOS knobs
 - [Writing a plugin](Writing-a-Service-Plugin) — adding new knobs
 
-Every snippet below is a `[decky.<slug>]` INI subsection — drop it under the
-matching `[decky.<name>]` block in your deployment INI.
+Every snippet below is a `[<decky-name>.<slug>]` INI subsection — drop it
+alongside the matching `[<decky-name>]` block (or `[<archetype>]` group
+block) in your deployment INI. See [INI format](INI-Config-Format) for the
+subsection-inheritance rules.
 
 ## Services with no INI knobs
 
@@ -51,7 +53,7 @@ Reads from `service_cfg`:
   prompt / `uname -n`)
 
 ```ini
-[decky.01.ssh]
+[decky-01.ssh]
 password = P@ssw0rd2019!
 hostname = mail-gw-03
 ```
@@ -64,7 +66,7 @@ Reads from `service_cfg`:
 - `hostname` — override container hostname
 
 ```ini
-[decky.02.telnet]
+[decky-02.telnet]
 password = cisco
 hostname = edge-rtr-07
 ```
@@ -82,7 +84,7 @@ Reads from `service_cfg`:
   `/opt/html_files` inside the container
 
 ```ini
-[decky.03.http]
+[decky-03.http]
 server_header = Apache/2.4.41 (Ubuntu)
 response_code = 200
 fake_app = phpMyAdmin 4.9.5
@@ -105,7 +107,7 @@ Reads from `service_cfg` — same as `http`, plus TLS overrides:
 - `tls_cn` — Common Name for a self-signed cert generated at startup
 
 ```ini
-[decky.04.https]
+[decky-04.https]
 server_header = nginx/1.18.0
 response_code = 403
 fake_app = Jenkins 2.387.3
@@ -119,7 +121,7 @@ Reads from `service_cfg`:
 - `version` — advertised MySQL server version string
 
 ```ini
-[decky.05.mysql]
+[decky-05.mysql]
 version = 5.7.38-log
 ```
 
@@ -131,7 +133,7 @@ Reads from `service_cfg`:
 - `os_string` — advertised OS string in `INFO server` output
 
 ```ini
-[decky.06.redis]
+[decky-06.redis]
 version = 6.2.7
 os_string = Linux 5.15.0-101-generic x86_64
 ```
@@ -144,7 +146,7 @@ Reads from `service_cfg`:
 - `mta` — advertised MTA software / version
 
 ```ini
-[decky.07.smtp]
+[decky-07.smtp]
 banner = mail.corp.local ESMTP Postfix (Debian/GNU)
 mta = Postfix 3.5.13
 ```
@@ -158,7 +160,7 @@ Inherits the `smtp` template with `SMTP_OPEN_RELAY=1` hard-wired. Reads from
 - `mta` — advertised MTA software / version
 
 ```ini
-[decky.08.smtp_relay]
+[decky-08.smtp_relay]
 banner = relay.corp.local ESMTP
 mta = Sendmail 8.15.2
 ```