Embed env_vars guidance in docs

kometa/CHANGELOG.md

@@ -0,0 +1,2 @@
+- Added support for configuring extra environment variables via the `env_vars` add-on option alongside config.yaml. See https://github.com/alexbelgium/hassio-addons/wiki/Add-Environment-variables-to-your-Addon-2 for details.
+

kometa/README.md

@@ -47,6 +47,8 @@ The installation of this add-on is pretty straightforward and not different in c
 
 ## Configuration
 
+Use the add-on `env_vars` option to pass extra environment variables (uppercase or lowercase names). See https://github.com/alexbelgium/hassio-addons/wiki/Add-Environment-variables-to-your-Addon-2 for details.
+
 There is a [walkthrough](https://github.com/Kometa-Team/Kometa#setting-up-the-initial-config-file) available to help get you up and running.
 For more information see the [official wiki](https://github.com/Kometa-Team/Kometa).
 
@@ -80,3 +82,5 @@ Create an issue on github
 ---
 
 ![illustration](https://dausruddin.com/wp-content/uploads/2020/05/plex-meta-manager-v3-1024x515.png)
+
+

kometa/config.yaml

@@ -84,7 +84,7 @@ privileged:
   - DAC_READ_SEARCH
 schema:
   env_vars:
-    - name: match(^[A-Z0-9_]+$)
+    - name: match(^[A-Za-z0-9_]+$)
       value: str?
   KOMETA_CONFIG: str
   KOMETA_NO_MISSING: bool?