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/Apply.md

@@ -0,0 +1,26 @@
+---
+title: collections.Apply
+description: Returns a new collection with each element transformed by the given function.
+categories: []
+keywords: []
+action:
+  aliases: [apply]
+  related: []
+  returnType: '[]any'
+  signatures: [collections.Apply COLLECTION FUNCTION PARAM...]
+aliases: [/functions/apply]
+---
+
+The `apply` function takes three or more arguments, depending on the function being applied to the collection elements.
+
+The first argument is the collection itself, the second argument is the function name, and the remaining arguments are passed to the function, with the string `"."` representing the collection element.
+
+```go-html-template
+{{ $s := slice "hello" "world" }}
+
+{{ $s = apply $s "strings.FirstUpper" "." }}
+{{ $s }} → [Hello World]
+
+{{ $s = apply $s "strings.Replace" "." "l" "_" }}
+{{ $s }} →  [He__o Wor_d]
+```