docs: mention that snippets can only be called through @render

Author: HoldYourWaffle

documentation/docs/03-template-syntax/06-snippet.md

@@ -55,6 +55,8 @@ Snippets, and [render tags](@render), are a way to create reusable chunks of mar
 
 Like function declarations, snippets can have an arbitrary number of parameters, which can have default values, and you can destructure each parameter. You cannot use rest parameters, however.
 
+> [!NOTE] Unlike function declarations, you can only call a snippet through the [`{@render ...}`](@render) tag.
+
 ## Snippet scope
 
 Snippets can be declared anywhere inside your component. They can reference values declared outside themselves, for example in the `<script>` tag or in `{#each ...}` blocks ([demo](/playground/untitled#H4sIAAAAAAAAE12P0QrCMAxFfyWrwhSEvc8p-h1OcG5RC10bmkyQ0n-3HQPBx3vCPUmCemiDrOpLULYbUdXqTKR2Sj6UA7_RCKbMbvJ9Jg33XpMcW9uKQYEAIzJ3T4QD3LSUDE-PnYA4YET4uOkGMc3W5B3xZrtvbVP9HDas2GqiZHqhMW6Tr9jGbG_oOCMImcUCwrIpFk1FqRyqpRpn0cmjHdAvnrIzuscyq_4nd3dPPD01ukE_NA6qFj9hvMYvGjJADw8BAAA=))...