chore: Alias pack to package command

Author: jcs090218

cmds/core/package.js

@@ -17,7 +17,7 @@
 
 "use strict";
 
-exports.command = ['package [destination]'];
+exports.command = ['package [destination]', 'pack [destination]'];
 exports.desc = 'Build a package artifact, and put it into the given destination';
 exports.builder = yargs => yargs
   .positional(

docs/content/Getting-Started/Commands-and-options/_index.en.md

@@ -172,6 +172,8 @@ $ eask uninstall
 
 Build the package artifact.
 
+Alias: `pack`
+
 ```sh
 $ eask package [DESTINATION]
 ```

docs/content/Getting-Started/Commands-and-options/_index.zh-tw.md

@@ -170,6 +170,8 @@ $ eask uninstall
 
 構建包工件。
 
+別名: `pack`
+
 ```sh
 $ eask package [DESTINATION]
 ```