docs: fix small typo (#13967)

A full stop or colon, we myst choose

documentation/docs/03-template-syntax/12-use.md

@@ -45,7 +45,7 @@ The action is only called once (but not during server-side rendering) — it wil
 
 ## Typing
 
-The `Action` interface receives three optional type arguments — a node type (which can be `Element`, if the action applies to everything), a parameter, and any custom event handlers created by the action.:
+The `Action` interface receives three optional type arguments — a node type (which can be `Element`, if the action applies to everything), a parameter, and any custom event handlers created by the action:
 
 ```svelte
 <!--- file: App.svelte --->