Fix Discord.Rest namespace

src/Discord.Net.Rest/Entities/Guilds/RestGuildEmbed.cs

@@ -1,7 +1,7 @@
 using System.Diagnostics;
 using Model = Discord.API.GuildEmbed;
 
-namespace Discord.Net.Rest
+namespace Discord.Rest
 {
     [DebuggerDisplay(@"{DebuggerDisplay,nq}")]
     public struct RestGuildEmbed

src/Discord.Net.Rest/Entities/Guilds/RestVoiceRegion.cs

@@ -2,7 +2,7 @@ using Discord.Rest;
 using System.Diagnostics;
 using Model = Discord.API.VoiceRegion;
 
-namespace Discord.Net.Rest
+namespace Discord.Rest
 {
     /// <summary>
     ///     Represents a REST-based voice region.

src/Discord.Net.Rest/Entities/Users/RestConnection.cs

@@ -3,7 +3,7 @@ using System.Collections.Immutable;
 using System.Diagnostics;
 using Model = Discord.API.Connection;
 
-namespace Discord.Net.Rest
+namespace Discord.Rest
 {
     [DebuggerDisplay(@"{DebuggerDisplay,nq}")]
     public class RestConnection : IConnection