Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

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

Closes #11925

docs/content/en/functions/os/FileExists.md

@@ -0,0 +1,41 @@
+---
+title: os.FileExists
+description: Reports whether the file or directory exists.
+categories: []
+keywords: []
+action:
+  aliases: [fileExists]
+  related:
+    - functions/os/Getenv
+    - functions/os/ReadDir
+    - functions/os/ReadFile
+    - functions/os/Stat
+  returnType: bool
+  signatures: [os.FileExists PATH]
+aliases: [/functions/fileexists]
+---
+
+The `os.FileExists` function attempts to resolve the path relative to the root of your project directory. If a matching file or directory is not found, it will attempt to resolve the path relative to the [`contentDir`](/getting-started/configuration#contentdir). A leading path separator (`/`) is optional.
+
+With this directory structure:
+
+```text
+content/
+├── about.md
+├── contact.md
+└── news/
+    ├── article-1.md
+    └── article-2.md
+```
+
+The function returns these values:
+
+```go-html-template
+{{ fileExists "content" }} → true
+{{ fileExists "content/news" }} → true
+{{ fileExists "content/news/article-1" }} → false
+{{ fileExists "content/news/article-1.md" }} → true
+{{ fileExists "news" }} → true
+{{ fileExists "news/article-1" }} → false
+{{ fileExists "news/article-1.md" }} → true
+```