Replace links to variable pages with links to method pages

See #2196

content/en/methods/shortcode/Inner.md

@@ -48,7 +48,7 @@ Is rendered to:
 {{% note %}}
 Content between opening and closing shortcode tags may include leading and/or trailing newlines, depending on placement within the markdown. Use the [`trim`] function as shown above to remove both carriage returns and newlines.
 
-[`trim`]: /functions/strings/trim
+[`trim`]: /functions/strings/trim/
 {{% /note %}}
 
 {{% note %}}
@@ -60,7 +60,7 @@ In the example above, the value returned by `Inner` is markdown, but it was rend
 
 Let's modify the example above to pass the value returned by `Inner` through the [`RenderString`] method on the `Page` object:
 
-[`RenderString`]: /methods/page/renderstring
+[`RenderString`]: /methods/page/renderstring/
 
 {{< code file=layouts/shortcodes/card.html  >}}
 <div class="card">
@@ -86,8 +86,8 @@ Hugo renders this to:
 
 You can use the [`markdownify`] function instead of the `RenderString` method, but the latter is more flexible. See&nbsp;[details].
 
-[details]: /methods/page/renderstring
-[`markdownify`]: /functions/transform/markdownify
+[details]: /methods/page/renderstring/
+[`markdownify`]: /functions/transform/markdownify/
 
 ## Use alternate notation
 

content/en/methods/shortcode/InnerDeindent.md

@@ -96,4 +96,4 @@ Hugo renders the markdown to:
 
 [commonmark]: https://commonmark.org/
 [indentation]: https://spec.commonmark.org/0.30/#indented-code-blocks
-[`Inner`]: /methods/shortcode/inner
+[`Inner`]: /methods/shortcode/inner/

content/en/methods/shortcode/Ordinal.md

@@ -46,5 +46,5 @@ Hugo renders the page to:
 {{% note %}}
 In the shortcode template above, the [`with`] statement is used to create conditional blocks. Remember that the `with` statement binds context (the dot) to its expression. Inside of a `with` block, preface shortcode method calls with a `$` to access the top level context passed into the template.
 
-[`with`]: /functions/go-template/with
+[`with`]: /functions/go-template/with/
 {{% /note %}}

content/en/methods/shortcode/Scratch.md

@@ -16,7 +16,7 @@ The `Scratch` method within a shortcode creates a [scratch pad] to store and man
 With the introduction of the [`newScratch`] function, and the ability to [assign values to template variables] after initialization, the `Scratch` method within a shortcode is obsolete.
 
 [assign values to template variables]: https://go.dev/doc/go1.11#text/template
-[`newScratch`]: functions/collections/newscratch
+[`newScratch`]: /functions/collections/newscratch/
 {{% /note %}}
 
 [scratch pad]: /getting-started/glossary/#scratch-pad

content/en/methods/shortcode/Site.md

@@ -12,7 +12,7 @@ action:
 
 See [Site methods].
 
-[Site methods]: /methods/site
+[Site methods]: /methods/site/
 
 ```go-html-template
 {{ .Site.Title }}