docs: Prepare for new sub tree

See #11925

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

@@ -1,59 +0,0 @@
----
-title: IsTranslated
-description: Reports whether the given page has one or more translations.
-categories: []
-keywords: []
-action:
-  related:
-   - methods/page/Translations
-   - methods/page/AllTranslations
-   - methods/page/TranslationKey
-  returnType: bool
-  signatures: [PAGE.IsTranslated]
----
-
-With this site configuration:
-
-{{< code-toggle file=hugo >}}
-defaultContentLanguage = 'en'
-
-[languages.en]
-contentDir = 'content/en'
-languageCode = 'en-US'
-languageName = 'English'
-weight = 1
-
-[languages.de]
-contentDir = 'content/de'
-languageCode = 'de-DE'
-languageName = 'Deutsch'
-weight = 2
-{{< /code-toggle >}}
-
-And this content:
-
-```text
-content/
-├── de/
-│   ├── books/
-│   │   └── book-1.md
-│   └── _index.md
-├── en/
-│   ├── books/
-│   │   ├── book-1.md
-│   │   └── book-2.md
-│   └── _index.md
-└── _index.md
-```
-
-When rendering content/en/books/book-1.md:
-
-```go-html-template
-{{ .IsTranslated }} → true
-```
-
-When rendering content/en/books/book-2.md:
-
-```go-html-template
-{{ .IsTranslated }} → false
-```