Make the folder name for data lowercase (#302)

- Lowercase is preferred for these data folders. The "Main" folder is capitalized though, but that's consistent.

Author: sondreb

src/Networks/Blockcore.Networks.XRC/XRCMain.cs

@@ -29,10 +29,10 @@ public class XRCMain : Network
         public const int xRhodiumDefaultMaxTipAgeInSeconds = 604800;
 
         /// <summary> The name of the root folder containing the different xRhodium blockchains (xRhodiumMain, xRhodiumTest, xRhodiumRegTest). </summary>
-        public const string xRhodiumRootFolderName = "xRhodium";
+        public const string xRhodiumRootFolderName = "xrhodium";
 
         /// <summary> The default name used for the xRhodium configuration file. </summary>
-        public const string xRhodiumDefaultConfigFilename = "xRhodium.conf";
+        public const string xRhodiumDefaultConfigFilename = "xrhodium.conf";
 
         public XRCMain()
         {