Mention EFCK_TYPEOUT_CMD= also on Downloads page

Author: kernc

content/pages/download.md

@@ -135,6 +135,9 @@ If on **Wayland**, additionally install package _**ydotool**_, e.g.
 
     sudo apt install ydotool
 
+or you can override the chosen typeout command by setting
+[`EFCK_TYPEOUT_CMD` environment variable](/faq/#env-vars).
+
 It is recommended to
 assign a **keyboard shortcut**
 such as <kbd>Win</kbd>+<kbd>.</kbd>,

content/pages/faq.md

@@ -82,7 +82,7 @@ In all above cases, `{APP_NAME}` stands for `"efck-chat-keyboard"`.
 </details>
 
 
-<details markdown="1" id="config-home">
+<details markdown="1" id="env-vars">
 <summary><h3>Customization via environment variables ...</h3></summary>
 The following known environment variables affect program runtime: