further clarify readme

readme-vars.yml

@@ -24,7 +24,6 @@ param_net: "host"
 param_net_desc: "Use host networking for IPv6 detection"
 param_usage_include_env: true
 param_env_vars:
-  - { env_var: "TZ", env_value: "Europe/London", desc: "Specify a timezone to use EG Europe/London"}
   - { env_var: "SUBDOMAINS", env_value: "subdomain1,subdomain2", desc: "multiple subdomains allowed, comma separated, no spaces, if your domain is user.duckdns.org you put user, not a sub-subdomain"}
   - { env_var: "TOKEN", env_value: "token", desc: "DuckDNS token"}
 param_usage_include_vols: false
@@ -43,7 +42,7 @@ opt_param_env_vars:
   - { env_var: "LOG_FILE", env_value: "false", desc: "Set to `true` to log to file (also need to map /config).", env_options: ["false", "true"] }
 opt_param_usage_include_vols: true
 opt_param_volumes:
-  - { vol_path: "/config", vol_host_path: "/path/to/{{ project_name }}/config", desc: "Persistent config files. Set to true to keep address history." }
+  - { vol_path: "/config", vol_host_path: "/path/to/{{ project_name }}/config", desc: "Persistent config files. Also et `LOG_FILE=true` to keep address history." }
 opt_param_usage_include_ports: false
 opt_param_ports: ""
 opt_param_device_map: false
@@ -58,9 +57,9 @@ optional_block_1_items: ""
 # application setup block
 app_setup_block_enabled: true
 app_setup_block: |
-  - Go to the [duckdns website]({{project_url}}), register your subdomain(s) and retrieve your token
-  - Create a container with your subdomain(s) and token. If you own user.duckdns.org, you put `SUBDOMAINS=user` you would NOT put a sub subdomain like overseerr from overseerr.user.ducksdns.org
-  - It will update your IP with the DuckDNS service every 5 minutes (with a random jitter)
+  - Go to the [duckdns website]({{project_url}}), register your subdomain(s) and retrieve your token.
+  - Create a container with your subdomain(s) and token. If you own `user.duckdns.org`, you set `SUBDOMAINS=user`. You would NOT set a sub subdomain like `overseerr` from `overseerr.user.ducksdns.org`.
+  - It will update your IP with the DuckDNS service every 5 minutes (with a random jitter).
 
   ## Notice regarding automatic detection
 
@@ -71,7 +70,7 @@ app_setup_block: |
 
 # changelog
 changelogs:
-  - { date: "30.03.24:", desc: "Added IP address to logging output when updating addresses." }
+  - { date: "30.03.24:", desc: "Added IP address to logging output when IP changes." }
   - { date: "23.12.23:", desc: "Rebase to Alpine 3.19." }
   - { date: "14.10.23:", desc: "Rework shell script for case insensitivity and update readme to be more clear." }
   - { date: "13.10.23:", desc: "Add support for public IPv6 address update using Cloudflare." }