Fix inconsistency in plugin name (#452)

neo-cli/Shell/MainService.cs

@@ -1250,19 +1250,22 @@ private bool OnUnInstallCommand(string[] args)
             }
 
             var pluginName = args[1];
-
-            if (!Plugin.Plugins.Any(u => u.Name == pluginName))
+            var plugin = Plugin.Plugins.FirstOrDefault(p => p.Name == pluginName);
+            if (plugin is null)
             {
                 Console.WriteLine("Plugin not found");
                 return true;
             }
 
-            if (Directory.Exists(Path.Combine("Plugins", pluginName)))
+            File.Delete(plugin.Path);
+            File.Delete(plugin.ConfigFile);
+            try
+            {
+                Directory.Delete(Path.GetDirectoryName(plugin.ConfigFile), false);
+            }
+            catch (IOException)
             {
-                Directory.Delete(Path.Combine("Plugins", pluginName), true);
             }
-
-            File.Delete(Path.Combine("Plugins", $"{pluginName}.dll"));
             Console.WriteLine($"Uninstall successful, please restart neo-cli.");
             return true;
         }