update the paragraph title

README.md

@@ -6,7 +6,7 @@
 
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-# ip2region Features
+# Features
 
 ### 1. Offline Localization Library
 
@@ -33,7 +33,7 @@ Even for queries based entirely on the `xdb` file, the single query response tim
 
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-# `xdb` Data Query
+# `xdb` Query
 
 For API introductions, usage documentation, and test programs, please refer to the README introduction under the corresponding `searcher` query client. All query binding implementations are as follows:
 
@@ -64,7 +64,7 @@ The following toolchain implementations are contributed by community developers
 
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-# `xdb` Data Generation
+# `xdb` Generation
 
 For API introductions, usage documentation, and test programs, please refer to the README documents under the following `maker` generation programs:
 
@@ -79,7 +79,7 @@ For API introductions, usage documentation, and test programs, please refer to t
 
 ---
 
-# `xdb` Data Update
+# `xdb` Update
 
 The core of the ip2region project lies in **researching the design and implementation of IP data storage and fast querying**. The raw data `./data/ipv4_source.txt` and `./data/ipv6_source.txt` included in the project are updated irregularly. For scenarios with high requirements for data accuracy and update frequency, it is recommended to purchase commercial offline data from the [Ip2Region Community](https://ip2region.net/products/offline) or third-party vendors. You can try to update the data yourself using the following methods:
 

README_zh.md

@@ -33,7 +33,7 @@
 
 ---
 
-# `xdb` 数据查询
+# `xdb` 查询
 
 API 介绍，使用文档和测试程序请参考对应 `searcher` 查询客户端下的 README 介绍，全部查询 binding 实现情况如下：
 | 编程语言                         | 描述                        | IPv4 支持          | IPv6 支持          | 贡献者                                            |
@@ -63,7 +63,7 @@ API 介绍，使用文档和测试程序请参考对应 `searcher` 查询客户
 
 ---
 
-# `xdb` 数据生成
+# `xdb` 生成
 
 API 介绍，使用文档和测试程序请参考如下 `maker` 生成程序下的 README 文档：
 
@@ -78,7 +78,7 @@ API 介绍，使用文档和测试程序请参考如下 `maker` 生成程序下
 
 ---
 
-# `xdb` 数据更新
+# `xdb` 更新
 
 ip2region 项目的核心在于 <b>研究 IP 数据的存储和快速查询的设计和实现</b>， 项目自带的 `./data/ipv4_source.txt` 和 `./data/ipv6_source.txt` 原始数据不定期更新，对于数据精度和更新频率要求很高的使用场景建议到 [Ip2Region社区](https://ip2region.net/products/offline) 或者第三方购买商用离线数据，你可以使用如下几种方式来尝试自己更新数据：