[8.2] [DOCS] Fix broken Canvas link (#203852) (#203871)

# Backport

This will backport the following commits from `8.8` to `8.2`:
- [[DOCS] Fix broken Canvas link
(#203852)](#203852)

<!--- Backport version: 8.9.8 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sqren/backport)

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Fix broken Canvas link
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Fix broken Canvas link
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BACKPORT-->

src/plugins/expressions/README.asciidoc

@@ -56,4 +56,4 @@ https://github.com/elastic/kibana/blob/main/docs/development/plugins/expressions
 
 
 ==== Other documentation
-https://www.elastic.co/guide/en/kibana/current/canvas-function-arguments.html[See Canvas documentation about expressions]
+<<canvas-function-arguments,See Canvas documentation about expressions>>