Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

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

Closes #11925

docs/content/en/about/_index.md

@@ -0,0 +1,16 @@
+---
+title: About Hugo
+linkTitle: Overview
+description: Hugo's features, roadmap, license, and motivation.
+categories: []
+keywords: []
+menu:
+  docs:
+    identifier: about-hugo-overview
+    parent: about
+    weight: 10
+weight: 10
+aliases: [/about-hugo/,/docs/]
+---
+
+Hugo is not your average static site generator.