doc: document function config

nvimdev · Oct 3, 2024 · f991894 · f991894
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diff --git a/CUSTOMIZE.md b/CUSTOMIZE.md
@@ -28,6 +28,8 @@ A tool is specified as follows:
 
 guard also tries to require them if you have `guard-collection`.
 
+You can also pass in a function that evaluates to the table above, it will be evaluated every time you call format.
+
 ## Examples: formatters
 Let's see a few formatters from `guard-collection`: