Deprecate SlashCommand#guildId

Author: Chew

command/src/main/java/com/jagrosh/jdautilities/command/SlashCommand.java

@@ -128,6 +128,8 @@ public abstract class SlashCommand extends Command
      * The ID of the server you want guildOnly tied to.
      * This means the slash command will only work and show up in the specified Guild.
      * If this is null, guildOnly will still be processed, however an ephemeral message will be sent telling them to move.
+     * @deprecated This will be removed in favor of {@link CommandClientBuilder#forceGuildOnly(String)}. Please use that instead.
+     * @see CommandClientBuilder#forceGuildOnly(String)
      */
     protected String guildId = null;
 
@@ -376,6 +378,8 @@ public CommandClient getClient()
     /**
      * Gets the associated Guild ID for Guild Only command.
      *
+     * @deprecated This will be removed in favor of {@link CommandClientBuilder#forceGuildOnly(String)}. Please use that instead.
+     * @see CommandClientBuilder#forceGuildOnly(String)
      * @return the ID for the specific Guild
      */
     public String getGuildId()