Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

```
git subtree add --prefix=docs/ https://github.com/gohugoio/hugoDocs.git master --squash
```

Closes #11925

docs/content/en/functions/collections/KeyVals.md

@@ -0,0 +1,43 @@
+---
+title: collections.KeyVals
+description: Returns a KeyVals struct.
+categories: []
+keywords: []
+action:
+  aliases: [keyVals]
+  related:
+    - methods/pages/Related
+  returnType: types.KeyValues
+  signatures: [collections.KeyVals KEY VALUES...]
+aliases: [/functions/keyvals]
+---
+
+The primary application for this function is the definition of the `namedSlices` parameter in the options map passed to the [`Related`] method on the `Pages` object.
+
+[`Related`]: /methods/pages/related
+
+See [related content](/content-management/related).
+
+```go-html-template
+{{ $kv := keyVals "foo" "a" "b" "c" }}
+```
+
+The resulting data structure is:
+
+```json
+{
+  "Key": "foo",
+  "Values": [
+    "a",
+    "b",
+    "c"
+  ]
+}
+```
+
+To extract the key and values:
+
+```go-html-template
+{{ $kv.Key }} → foo
+{{ $kv.Values }} → [a b c]
+```