Add urlquery function docs (#1633)

* Add urlquery function docs

Fixes #1627

* Update content/en/functions/urlquery.md

* Update content/en/functions/urlquery.md

* Update content/en/functions/urlquery.md

* Update content/en/functions/urlquery.md

* Update content/en/functions/urlquery.md

* Update content/en/functions/urlquery.md

* Update content/en/functions/urlquery.md

* Update content/en/functions/urlquery.md

Co-authored-by: Joe Mooring <joe@mooring.com>

content/en/functions/urlquery.md

@@ -0,0 +1,33 @@
+---
+title: urlquery
+linktitle: urlquery
+description: Returns the escaped value of the textual representation of its arguments in a form suitable for embedding in a URL query.
+date: 2022-01-18
+publishdate: 2022-01-18
+lastmod: 2022-01-18
+categories: [functions]
+menu:
+  docs:
+    parent: "functions"
+keywords: [urls]
+signature: ["urlquery INPUT [INPUT]..."]
+hugoversion:
+deprecated: false
+workson: []
+relatedfuncs: []
+aliases: []
+---
+
+
+This template code:
+
+```go-html-template
+{{ $u := urlquery "https://" "example.com" | safeURL }}
+<a href="https://example.org?url={{ $u }}">Link</a>
+```
+
+Is rendered to:
+
+```html
+<a href="https://example.org?url=https%3A%2F%2Fexample.com">Link</a>
+```