Added line breaks after each PropertyGroup

Improved readability and comparison of `csproj` files by adding consistent line breaks to differentatiate each `<PropertyGroup />` element. These were originally committed in #2322788, but one project was missed. Whoops.

Author: JeremyCaney

OnTopic.Tests/OnTopic.Tests.csproj

@@ -1,11 +1,13 @@
 <Project Sdk="Microsoft.NET.Sdk">
+
   <PropertyGroup>
     <TargetFramework>netcoreapp3.0</TargetFramework>
     <IsPackable>false</IsPackable>
     <NoWarn>CS1591,1701,1702,CA1707,CA1062,CS8602,CS8604;CA1303;IDE0059</NoWarn>
     <LangVersion>8.0</LangVersion>
     <Nullable>enable</Nullable>
   </PropertyGroup>
+
   <PropertyGroup>
     <AssemblyTitle>Ignia OnTopic Unit Tests</AssemblyTitle>
     <Company>Ignia</Company>
@@ -14,6 +16,7 @@
     <Copyright>©2020 Ignia, LLC</Copyright>
     <OutputPath>bin\$(Configuration)\</OutputPath>
   </PropertyGroup>
+
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugType>full</DebugType>
     <DocumentationFile>bin\$(Configuration)\OnTopic.Tests.XML</DocumentationFile>
@@ -22,6 +25,7 @@
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
   </PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="2.9.4">
       <PrivateAssets>all</PrivateAssets>
@@ -31,10 +35,12 @@
     <PackageReference Include="MSTest.TestAdapter" Version="2.0.0" />
     <PackageReference Include="MSTest.TestFramework" Version="2.0.0" />
   </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\OnTopic.Data.Caching\OnTopic.Data.Caching.csproj" />
     <ProjectReference Include="..\OnTopic.TestDoubles\OnTopic.TestDoubles.csproj" />
     <ProjectReference Include="..\OnTopic.ViewModels\OnTopic.ViewModels.csproj" />
     <ProjectReference Include="..\OnTopic\OnTopic.csproj" />
   </ItemGroup>
+
 </Project>