Reorder the docs to make more sense

CONTRIBUTING.md

@@ -14,6 +14,9 @@ with any additional questions or comments.
 
 ## Prerequisites
 
+All dependencies can be installed by running the `init.ps1` script at the root of the repository
+using Windows PowerShell or [PowerShell Core][pwsh] (on any OS).
+
 The only prerequisite for building, testing, and deploying from this repository
 is the [.NET SDK](https://get.dot.net/).
 You should install the version specified in `global.json` or a later version within
@@ -22,11 +25,6 @@ For example if 2.2.300 is specified, you may install 2.2.300, 2.2.301, or 2.2.31
 while the 2.2.400 version would not be considered compatible by .NET SDK.
 See [.NET Core Versioning](https://docs.microsoft.com/en-us/dotnet/core/versions/) for more information.
 
-All dependencies can be installed by running the `init.ps1` script at the root of the repository
-using Windows PowerShell or [PowerShell Core][pwsh] (on any OS).
-
-This repository can be built on Windows, Linux, and OSX.
-
 ## Package restore
 
 The easiest way to restore packages may be to run `init.ps1` which automatically authenticates
@@ -35,6 +33,8 @@ to the feeds that packages for this repo come from, if any.
 
 ## Building
 
+This repository can be built on Windows, Linux, and OSX.
+
 Building, testing, and packing this repository can be done by using the standard dotnet CLI commands (e.g. `dotnet build`, `dotnet test`, `dotnet pack`, etc.).
 
 [pwsh]: https://docs.microsoft.com/en-us/powershell/scripting/install/installing-powershell?view=powershell-6