Switch .slnx to forward slashes

Rider used backslashes previously, but this recently changed;
update to match the current IDE.

Author: nil4

Beyond.NET.slnx

@@ -1,15 +1,15 @@
 <Solution>
   <Folder Name="/Builder/">
-    <Project Path="Builder\Beyond.NET.Builder.Apple\Beyond.NET.Builder.Apple.csproj" />
-    <Project Path="Builder\Beyond.NET.Builder.DotNET\Beyond.NET.Builder.DotNET.csproj" />
-    <Project Path="Builder\Beyond.NET.Builder\Beyond.NET.Builder.csproj" />
+    <Project Path="Builder/Beyond.NET.Builder.Apple/Beyond.NET.Builder.Apple.csproj" />
+    <Project Path="Builder/Beyond.NET.Builder.DotNET/Beyond.NET.Builder.DotNET.csproj" />
+    <Project Path="Builder/Beyond.NET.Builder/Beyond.NET.Builder.csproj" />
   </Folder>
   <Folder Name="/Core/">
-    <Project Path="Core\Beyond.NET.Core\Beyond.NET.Core.csproj" />
+    <Project Path="Core/Beyond.NET.Core/Beyond.NET.Core.csproj" />
   </Folder>
   <Folder Name="/Generator/">
-    <Project Path="Generator\Beyond.NET.CodeGenerator.CLI\Beyond.NET.CodeGenerator.CLI.csproj" />
-    <Project Path="Generator\Beyond.NET.CodeGenerator\Beyond.NET.CodeGenerator.csproj" />
+    <Project Path="Generator/Beyond.NET.CodeGenerator.CLI/Beyond.NET.CodeGenerator.CLI.csproj" />
+    <Project Path="Generator/Beyond.NET.CodeGenerator/Beyond.NET.CodeGenerator.csproj" />
   </Folder>
   <Folder Name="/Resources/">
     <File Path="LICENSE" />
@@ -18,9 +18,9 @@
     <File Path="RELEASE_NOTES.md" />
   </Folder>
   <Folder Name="/Samples/">
-    <Project Path="Samples\Beyond.NET.Sample.Managed\Beyond.NET.Sample.Managed.csproj" />
-    <Project Path="Samples\Beyond.NET.Sample.Native\Beyond.NET.Sample.Native.csproj" />
-    <File Path="Samples\Beyond.NET.Sample_Config.json" />
-    <File Path="Samples\Beyond.NET.Sample_BuildConfig.json" />
+    <Project Path="Samples/Beyond.NET.Sample.Managed/Beyond.NET.Sample.Managed.csproj" />
+    <Project Path="Samples/Beyond.NET.Sample.Native/Beyond.NET.Sample.Native.csproj" />
+    <File Path="Samples/Beyond.NET.Sample_Config.json" />
+    <File Path="Samples/Beyond.NET.Sample_BuildConfig.json" />
   </Folder>
 </Solution>