configuring: document noerror

pages/Configuring/Configuring-Hyprland.md

@@ -57,6 +57,20 @@ Comments are started with the `#` character.
 If you want to escape it (put an actual `#` and not start a comment) you can use
 `##`. It will be turned into a single `#` that WILL be a part of your line.
 
+### Escaping errors
+
+If you use plugins, you may want to ignore errors from missing options/keywords
+so that you don't get an error bar before they are loaded. To do so, do this:
+
+```ini
+# hyprlang noerror true
+
+bind = MOD, KEY, something, amogus
+someoption = blah
+
+# hyprlang noerror false
+```
+
 ## Basic configuring
 
 To configure the "options" of Hyprland, animations, styling, etc. see