Fix bug when fetching page other than / or /api/*

.vs/youtube-downloader/xs/UserPrefs.xml

@@ -1,7 +1,7 @@
 <Properties StartupConfiguration="{E26F8159-6B4B-4660-A7A4-D0333DFEF0DD}|Default" NuGet.AddPackagesDialog.IncludePrerelease="True">
-  <MonoDevelop.Ide.Workbench ActiveDocument="../../../../usr/lib/mono/msbuild/Current/bin/Microsoft.Common.CurrentVersion.targets">
+  <MonoDevelop.Ide.Workbench ActiveDocument="TYTD.Api/Server/Models/InfoType.cs">
     <Files>
-      <File FileName="TYTD.Api/Server/Models/InfoType.cs" Line="155" Column="47" />
+      <File FileName="TYTD.Api/Server/Models/InfoType.cs" Line="171" Column="40" />
       <File FileName="TYTD.Api/Server/Functions/Downloader.cs" Line="1141" Column="18" />
       <File FileName="TYTD.Api/Server/Models/SavedMedia.cs" Line="1" Column="1" />
       <File FileName="TYTD.Api/Server/Models/SavedVideo.cs" Line="8" Column="1" />
@@ -24,8 +24,10 @@
         <State name="__root__">
           <Node name="youtube-downloader" expanded="True">
             <Node name="TYTD.Api" expanded="True">
-              <Node name="Packages" expanded="True">
-                <Node name="YoutubeExplode" selected="True" />
+              <Node name="Server" expanded="True">
+                <Node name="Models" expanded="True">
+                  <Node name="InfoType.cs" selected="True" />
+                </Node>
               </Node>
             </Node>
             <Node name="youtube-downloader" expanded="True">

Program.cs

@@ -1730,7 +1730,7 @@ namespace TYTD
         public static void RootPath(HttpListenerRequest rq, HttpListenerResponse rp, Dictionary<string, string> args)
         {
             string p = System.Web.HttpUtility.UrlDecode(args["Path"]).Split(new char[] { '?' }, StringSplitOptions.RemoveEmptyEntries)[0]; 
-            string path = "WebSite/{p}";
+            string path = $"WebSite/{p}";
             if (Directory.Exists(path))
             {
                 string indexHtml = Path.Combine(path, "index.html");