Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

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

Closes #11925

docs/content/en/functions/strings/RuneCount.md

@@ -0,0 +1,24 @@
+---
+title: strings.RuneCount
+description: Returns the number of runes in the given string.
+categories: []
+keywords: []
+action:
+  aliases: []
+  related:
+    - functions/go-template/len
+    - functions/strings/Count
+    - functions/strings/CountRunes
+    - functions/strings/CountWords
+  returnType: int
+  signatures: [strings.RuneCount INPUT]
+aliases: [/functions/strings.runecount]
+---
+
+In contrast with the [`strings.CountRunes`] function, which excludes whitespace, `strings.RuneCount` counts every rune in a string.
+
+```go-html-template
+{{ "Hello, 世界" | strings.RuneCount }} → 9
+```
+
+[`strings.CountRunes`]: /functions/strings/countrunes