Add ViewChannel to Voice channel permissions (#1059)

Previously, Voice channels did not have ViewChannel in their "all" permissions

src/Discord.Net.Core/Entities/Permissions/ChannelPermissions.cs

@@ -12,7 +12,7 @@ namespace Discord
         /// <summary> Gets a ChannelPermissions that grants all permissions for text channels. </summary>
         public static readonly ChannelPermissions Text = new ChannelPermissions(0b01100_0000000_1111111110001_010001);
         /// <summary> Gets a ChannelPermissions that grants all permissions for voice channels. </summary>
-        public static readonly ChannelPermissions Voice = new ChannelPermissions(0b00100_1111110_0000000000000_010001);
+        public static readonly ChannelPermissions Voice = new ChannelPermissions(0b00100_1111110_0000000010000_010001);
         /// <summary> Gets a ChannelPermissions that grants all permissions for category channels. </summary>
         public static readonly ChannelPermissions Category = new ChannelPermissions(0b01100_1111110_1111111110001_010001);
         /// <summary> Gets a ChannelPermissions that grants all permissions for direct message channels. </summary>