Merge commit '9b0050e9aabe4be65c78ccf292a348f309d50ccd' as 'docs'

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

Closes #11925

docs/content/en/functions/math/Sqrt.md

@@ -0,0 +1,16 @@
+---
+title: math.Sqrt
+description: Returns the square root of the given number.
+categories: []
+keywords: []
+action:
+  aliases: []
+  related:
+    - functions/math/Pow
+  returnType: float64
+  signatures: [math.Sqrt VALUE]
+---
+
+```go-html-template
+{{ math.Sqrt 81 }} → 9
+```