Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

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

Closes #11925

docs/content/en/methods/page/Len.md

@@ -0,0 +1,15 @@
+---
+title: Len
+description: Returns the length, in bytes, of the rendered content of the given page.
+categories: []
+keywords: []
+action:
+  related:
+    - methods/page/Content
+  returnType: int
+  signatures: [PAGE.Len]
+---
+
+```go-html-template
+{{ .Len }} → 42
+```