update release announce to 5.5
diff --git a/_jade/zh/index.jade b/_jade/zh/index.jade
index 7b96d39..7dde82b 100644
--- a/_jade/zh/index.jade
+++ b/_jade/zh/index.jade
@@ -40,7 +40,7 @@
                             #home-landing-animation-close-btn
                                 include ../components/svg/close.svg
 
-            section#new-version-section 📣 Apache ECharts 5.4 发布了! 查看<a href='#{host}/handbook/#{ecWWWLang}/basics/release-note/5-4-0?ref=banner' target='_blank'>新特性</a>
+            section#new-version-section 📣 Apache ECharts 5.5 发布了! 查看<a href='#{host}/handbook/#{ecWWWLang}/basics/release-note/5-5-0?ref=banner' target='_blank'>新特性</a>
 
             //- section#events-section
             //-     .container