fix: remove Authority badge from all READMEs (#82)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: ningzimu

README.en.md

@@ -11,7 +11,6 @@ English | **[中文](README.md)** | **[日本語](README.ja.md)**
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Data Sources](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/MLT-OSS/FirstData/refs/heads/main/assets/badges/sources-count.json)](firstdata/indexes/statistics.json)
 [![Progress](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/MLT-OSS/FirstData/refs/heads/main/assets/badges/progress.json)](firstdata/indexes/statistics.json)
-[![Authority](https://img.shields.io/badge/Authority-Government%20%26%20International%20First-brightgreen.svg)](#)
 [![MCP Server](https://img.shields.io/badge/MCP-AI%20Smart%20Search-purple.svg)](https://firstdata.deepminer.com.cn/)
 [![Skill](https://img.shields.io/badge/Skill-Agent%20First-blue.svg)](skills/firstdata/SKILL.md)
 [![ClawHub](https://img.shields.io/badge/ClawHub-firstdata-orange.svg)](https://clawhub.ai/ningzimu/firstdata)

README.ja.md

@@ -11,7 +11,6 @@
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Data Sources](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/MLT-OSS/FirstData/refs/heads/main/assets/badges/sources-count.json)](firstdata/indexes/statistics.json)
 [![Progress](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/MLT-OSS/FirstData/refs/heads/main/assets/badges/progress.json)](firstdata/indexes/statistics.json)
-[![Authority](https://img.shields.io/badge/Authority-Government%20%26%20International%20First-brightgreen.svg)](#)
 [![MCP Server](https://img.shields.io/badge/MCP-AI%20Smart%20Search-purple.svg)](https://firstdata.deepminer.com.cn/)
 [![Skill](https://img.shields.io/badge/Skill-Agent%20First-blue.svg)](skills/firstdata/SKILL.md)
 [![ClawHub](https://img.shields.io/badge/ClawHub-firstdata-orange.svg)](https://clawhub.ai/ningzimu/firstdata)

README.md

@@ -13,7 +13,6 @@
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Data Sources](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/MLT-OSS/FirstData/refs/heads/main/assets/badges/sources-count.json)](firstdata/indexes/statistics.json)
 [![Progress](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/MLT-OSS/FirstData/refs/heads/main/assets/badges/progress.json)](firstdata/indexes/statistics.json)
-[![Authority](https://img.shields.io/badge/Authority-Government%20%26%20International%20First-brightgreen.svg)](#)
 [![MCP Server](https://img.shields.io/badge/MCP-AI%20Smart%20Search-purple.svg)](https://firstdata.deepminer.com.cn/)
 [![Skill](https://img.shields.io/badge/Skill-Agent%20First-blue.svg)](skills/firstdata/SKILL.md)
 [![ClawHub](https://img.shields.io/badge/ClawHub-firstdata-orange.svg)](https://clawhub.ai/ningzimu/firstdata)