Update APP_KEY docs link

Author: thespad

README.md

@@ -134,7 +134,7 @@ Containers are configured using parameters passed at runtime (such as those abov
 | `-e PUID=1000` | for UserID - see below for explanation |
 | `-e PGID=1000` | for GroupID - see below for explanation |
 | `-e TZ=Etc/UTC` | specify a timezone to use, see this [list](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List). |
-| `-e APP_KEY=` | App key used for encrypting stored data. You can generate a key at [https://speedtest-tracker.dev](https://speedtest-tracker.dev) |
+| `-e APP_KEY=` | App key used for encrypting stored data. You can generate a key as per [https://speedtest-tracker.dev](https://docs.speedtest-tracker.dev/getting-started/installation/using-docker-compose#install-with-docker-compose) |
 | `-e APP_URL=` | The IP:port or URL your application will be accessed on (ie. `http://192.168.1.1:6875` or `https://bookstack.mydomain.com` |
 | `-e DB_CONNECTION=sqlite` | Set the database type to use. `sqlite`, `pgsql`, or `mysql` |
 | `-e SPEEDTEST_SCHEDULE=` | Set the test schedule in cron format. e.g. `0 */6 * * *` |

readme-vars.yml

@@ -15,7 +15,7 @@ common_param_env_vars_enabled: true
 param_container_name: "{{ project_name }}"
 param_usage_include_env: true
 param_env_vars:
-  - {env_var: "APP_KEY", env_value: "", desc: "App key used for encrypting stored data. You can generate a key at [https://speedtest-tracker.dev](https://speedtest-tracker.dev)"}
+  - {env_var: "APP_KEY", env_value: "", desc: "App key used for encrypting stored data. You can generate a key as per [https://speedtest-tracker.dev](https://docs.speedtest-tracker.dev/getting-started/installation/using-docker-compose#install-with-docker-compose)"}
   - {env_var: "APP_URL", env_value: "", desc: "The IP:port or URL your application will be accessed on (ie. `http://192.168.1.1:6875` or `https://bookstack.mydomain.com`"}
   - {env_var: "DB_CONNECTION", env_value: "sqlite", desc: "Set the database type to use. `sqlite`, `pgsql`, or `mysql`"}
   - {env_var: "SPEEDTEST_SCHEDULE", env_value: "", desc: "Set the test schedule in cron format. e.g. `0 */6 * * *`"}