modify some description in overview page

Author: andy12383

hetu-docs/en/overview/_index.md

@@ -1,7 +1,7 @@
 
 # Overview
 
-The word LooKeng in openLooKeng is taken from the English name of Loo-keng Hua, a famous Chinese mathematician. It also has the meaning of Look, which means querying and analyzing various data, make big data easier.
+The word LooKeng in openLooKeng is taken from the English name of Loo-keng Hua, a famous Chinese mathematician. LooKeng also sound similar  to the word "Looking", which means querying and analyzing various data, make big data easier.
 
 openLooKeng is a drop in engine which enables in-situ analytics on any data, anywhere, including geographically remote data sources. It provides a global view of all of your data via its SQL 2003 interface. With high availability, auto-scaling, built-in caching and indexing support, openLooKeng is ready for enterprise workload with required reliability. 
 

hetu-docs/zh/overview/_index.md

@@ -1,6 +1,6 @@
 # 概述
 
-openLooKeng的LooKeng取自中国著名数据家华罗庚先生的英文名Loo-keng Hua，同时也有Look的含义，寓意查询分析各种数据，让大数据更简单。
+openLooKeng的LooKeng取自中国著名数据家华罗庚先生的英文名Loo-keng Hua。同时LooKeng的发音也与Looking相近，寓意查询分析各种数据，让大数据更简单。
 
 openLooKeng是一种"开箱即用"的引擎，支持在任何地点（包括地理上的远程数据源）对任何数据进行原位分析。它通过SQL 2003接口提供了所有数据的全局视图。openLooKeng具有高可用性、自动伸缩、内置缓存和索引支持，为企业工作负载提供了所需的可靠性。