docs: enhance Gemini Thinking Mode documentation with clearer introduction and usage details

Author: gaodeng

docs/gemini-thinking-mode.md

@@ -1,6 +1,6 @@
 # Gemini Thinking Mode
 
-This guide explains how to use and customize Gemini's Thinking Mode in BotGem. Thinking Mode is enabled by default for Gemini 2.5 series models, allowing them to perform more complex reasoning and solve challenging tasks.
+Gemini 2.5 series models have thinking capabilities enabled by default, allowing them to perform deeper reasoning and tackle complex problems. Want to make the most of this powerful feature? This guide will show you how to customize and use Gemini's Thinking Mode in BotGem to see the model's reasoning process and get better results.
 
 ## How to Customize Thinking Mode for Gemini 2.5 Models
 

docs/zh/gemini-thinking-mode.md

@@ -1,6 +1,6 @@
 # Gemini 思考模式
 
-本指南介绍如何在 BotGem 中使用和自定义 Gemini 的思考模式。思考模式在 Gemini 2.5 系列模型中默认启用，使其能够执行更复杂的推理并解决具有挑战性的任务。
+Gemini 2.5 系列模型的思考功能默认就已开启，这使得模型能够进行更深层次的推理，帮你解决复杂问题。想要充分发挥这一能力？这篇文章将带你了解如何在 BotGem 中自定义和使用 Gemini 的思考模式。
 
 ## 如何自定义 Gemini 2.5 模型的思考模式