fix: alias not working (#125)

* fix: alias not working

* update e2e

Author: sy-records

e2e/cli.test.js.md

@@ -11,8 +11,8 @@ Generated by [AVA](https://ava.li).
     `Usage: docsify <init|serve> <path>␊
     ␊
     Commands:␊
-      docsify init [path]   Creates new docs␊
-      docsify serve [path]  Run local server to preview site.␊
+      docsify init [path]   Creates new docs                            [aliases: i]␊
+      docsify serve [path]  Run local server to preview site.           [aliases: s]␊
       docsify start <path>  Server for SSR␊
     ␊
     Global Options␊
@@ -35,8 +35,8 @@ Generated by [AVA](https://ava.li).
     `Usage: docsify <init|serve> <path>␊
     ␊
     Commands:␊
-      docsify init [path]   Creates new docs␊
-      docsify serve [path]  Run local server to preview site.␊
+      docsify init [path]   Creates new docs                            [aliases: i]␊
+      docsify serve [path]  Run local server to preview site.           [aliases: s]␊
       docsify start <path>  Server for SSR␊
     ␊
     Global Options␊
@@ -57,8 +57,8 @@ Generated by [AVA](https://ava.li).
     `Usage: docsify <init|serve> <path>␊
     ␊
     Commands:␊
-      docsify init [path]   Creates new docs␊
-      docsify serve [path]  Run local server to preview site.␊
+      docsify init [path]   Creates new docs                            [aliases: i]␊
+      docsify serve [path]  Run local server to preview site.           [aliases: s]␊
       docsify start <path>  Server for SSR␊
     ␊
     Global Options␊
@@ -79,8 +79,8 @@ Generated by [AVA](https://ava.li).
     `Usage: docsify <init|serve> <path>␊
     ␊
     Commands:␊
-      docsify init [path]   Creates new docs␊
-      docsify serve [path]  Run local server to preview site.␊
+      docsify init [path]   Creates new docs                            [aliases: i]␊
+      docsify serve [path]  Run local server to preview site.           [aliases: s]␊
       docsify start <path>  Server for SSR␊
     ␊
     Global Options␊

e2e/cli.test.js.snap

@@ -21,7 +21,7 @@ require('yargs')
   .usage(chalk.bold(y18n.__('usage') + ': docsify <init|serve> <path>'))
   .command({
     command: 'init [path]',
-    alias: 'i',
+    aliases: 'i',
     desc: chalk.gray(y18n.__('init')),
     builder: yargs =>
       yargs.options({
@@ -47,7 +47,7 @@ require('yargs')
   })
   .command({
     command: 'serve [path]',
-    alias: 's',
+    aliases: 's',
     desc: chalk.gray(y18n.__('serve')),
     builder: yargs =>
       yargs.options({