Fix casing

Author: JimBobSquarePants

SharedInfrastructure.sln

@@ -19,9 +19,9 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "_root", "_root", "{27502888
 		Directory.Build.targets = Directory.Build.targets
 		LICENSE = LICENSE
 		README.md = README.md
-		SixLabors.ruleset = SixLabors.ruleset
+		sixlabors.ruleset = sixlabors.ruleset
 		SixLabors.snk = SixLabors.snk
-		SixLabors.Tests.ruleset = SixLabors.Tests.ruleset
+		sixlabors.tests.ruleset = sixlabors.tests.ruleset
 		stylecop.json = stylecop.json
 	EndProjectSection
 EndProject

sixlabors.tests.ruleset

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RuleSet Name="SixLabors.Tests" ToolsVersion="16.0">
-  <Include Path="SixLabors.ruleset" Action="Default" />
+  <Include Path="sixlabors.ruleset" Action="Default" />
   <Rules AnalyzerId="Microsoft.CodeAnalysis.CSharp" RuleNamespace="Microsoft.CodeAnalysis.CSharp">
     <Rule Id="CS1591" Action="None" />
   </Rules>