Add chocolatey package install instructions (#11586)

* Update from-package.en-us.md

#10800

* Update docs/content/doc/installation/from-package.en-us.md

Co-authored-by: zeripath <art27@cantab.net>

Co-authored-by: zeripath <art27@cantab.net>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

Author: 3 people

docs/content/doc/installation/from-package.en-us.md

@@ -38,10 +38,13 @@ config is found in **/etc/gitea/app.ini**
 
 ## Windows
 
-There are no published packages for Windows. This page will change when packages are published,
-in the form of `MSI` installers or via [Chocolatey](https://chocolatey.org/). In the meantime, follow
-the [deployment from binary]({{< relref "from-binary.en-us.md" >}}) guide.
+There is a [Gitea](https://chocolatey.org/packages/gitea) package for Windows by [Chocolatey](https://chocolatey.org/).
 
+```sh
+choco install gitea
+```
+
+Or follow the [deployment from binary]({{< relref "from-binary.en-us.md" >}}) guide.
 ## macOS
 
 Currently, the only supported method of installation on MacOS is [Homebrew](http://brew.sh/).