Replace links to variable pages with links to method pages

See #2196

content/en/quick-reference/emojis.md

@@ -37,8 +37,8 @@ To process an emoji shortcode from within a template, use the [`emojify`] functi
 {{ "Hello! :wave:" | .RenderString }}
 ```
 
-[`emojify`]: /functions/transform/emojify
-[`RenderString`]: /methods/page/renderstring
+[`emojify`]: /functions/transform/emojify/
+[`RenderString`]: /methods/page/renderstring/
 
 ## Introduction
 

content/en/quick-reference/page-collections.md

@@ -31,7 +31,7 @@ Use these `Site` methods when rendering lists on any page.
 
 Use the [`where`] function to filter page collections.
 
-[`where`]: /functions/collections/where
+[`where`]: /functions/collections/where/
 
 ## Sort