docs: fix typo, update offer page

docs/high-availability/hystrix-process.md

@@ -88,6 +88,7 @@ ProductInfo productInfo = getProductInfoCommand.execute();
 ```
 
 - HystrixObservableCommand.construct() 返回一个 Observable 对象，可以获取多条结果。
+
 ```java
 Observable<ProductInfo> observable = getProductInfosCommand.observe();
 

index.html

@@ -29,7 +29,7 @@
           var footer = [
             '<hr/>',
             '<footer>',
-            '<span>Copyright © 2018 <a href="https://github.com/yanglbme" target="_blank">yanglbme</a>. All rights reserved.</span>',
+            '<span>Copyright © 2018-2019 <a href="https://github.com/yanglbme" target="_blank">yanglbme</a>. All rights reserved.</span>',
             '</footer>'
           ].join('')
 

offer.md

@@ -91,6 +91,36 @@ HR
 燃烧我的卡路里
 
 我要变成收割机
+
+
+                              _.._        ,------------.
+                           ,'      `.    ( We want you! )
+                          /  __) __` \    `-,----------'
+                         (  (`-`(-')  ) _.-'
+                         /)  \  = /  (
+                        /'    |--' .  \
+                       (  ,---|  `-.)__`
+                        )(  `-.,--'   _`-.
+                       '/,'          (  Uu",
+                        (_       ,    `/,-' )
+                        `.__,  : `-'/  /`--'
+                          |     `--'  |
+                          `   `-._   /
+                           \        (
+                           /\ .      \.  offer
+                          / |` \     ,-\
+                         /  \| .)   /   \
+                        ( ,'|\    ,'     :
+                        | \,`.`--"/      }
+                        `,'    \  |,'    /
+                       / "-._   `-/      |
+                       "-.   "-.,'|     ;
+                      /        _/["---'""]
+                     :        /  |"-     '
+                     '           |      /
+                                 `      |
+       
 ```
 
-[![get-up-and-study](/img/get-up-and-study.png)](https://doocs.github.io/advanced-java)
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+[![get-up-and-study](/img/get-up-and-study.png)](https://doocs.github.io/advanced-java)
+                          
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