Add missing reference page: Quoted Patterns with Polymorphic Functions

[Cherry-picked 009e064]

Author: jchyb

docs/sidebar.yml

@@ -172,6 +172,7 @@ subsection:
           - page: reference/experimental/runtimeChecked.md
           - page: reference/experimental/unrolled-defs.md
           - page: reference/experimental/package-object-values.md
+          - page: reference/experimental/quoted-patterns-with-polymorphic-functions.md
       - page: reference/syntax.md
       - title: Language Versions
         index: reference/language-versions/language-versions.md