docs: update demo video in readme (#733)

## What type of PR is this?

/kind documentation

## What this PR does / why we need it:

Update demo video in readme

## Which issue(s) this PR fixes:

<!--
*Automatically closes linked issue when PR is merged.
Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
_If PR is about `failing-tests or flakes`, please post the related
issues/tests in a comment and do not use `Fixes`_*
-->

Fixes #

README-pt.md

@@ -41,7 +41,7 @@
 
 O Karpor é um **Explorador de Kubernetes** Moderno focado em **Pesquisa**, **Insights** e **Inteligência**. Ele tem palavras-chave como `auto-hospedado`, `não invasivo`, `somente leitura`, `em conforme com a segurança`, `suporte multi-nuvem/multi-cluster`, `visualização lógica personalizada`, e pode servir como um **Plano de Dados Kubernetes** para reduzir o custo de descoberta e compreensão dos recursos do Kubernetes.
 
-https://github.com/KusionStack/karpor/assets/49401013/7cf31cc0-7123-42f6-8543-5addcbf4975c
+https://github.com/user-attachments/assets/44ecb3b6-e76b-4003-9546-25c6b5f8b949
 
 ## Por que escolher o Karpor?
 

README-zh.md

@@ -44,7 +44,7 @@ Karpor 是一个现代化的 Kubernetes 可视化工具，核心特性聚焦在
 
 **当前状态**: 我们正在迭代 [v0.5.0 里程碑](https://github.com/KusionStack/karpor/milestone/4),  欢迎加入 [讨论](https://github.com/KusionStack/karpor/discussions/528).
 
-https://github.com/KusionStack/karpor/assets/49401013/7cf31cc0-7123-42f6-8543-5addcbf4975c
+https://github.com/user-attachments/assets/44ecb3b6-e76b-4003-9546-25c6b5f8b949
 
 ## 为什么选择 Karpor？
 

README.md

@@ -44,7 +44,7 @@ We hope to become a **small and beautiful, vendor-neutral, developer-friendly, c
 
 **Current Status**: We are iterating [v0.6.0 Milestone](https://github.com/KusionStack/karpor/milestone/5), welcome to join the [discussion](https://github.com/KusionStack/karpor/discussions/624).
 
-https://github.com/KusionStack/karpor/assets/49401013/7cf31cc0-7123-42f6-8543-5addcbf4975c
+https://github.com/user-attachments/assets/44ecb3b6-e76b-4003-9546-25c6b5f8b949
 
 ## Why Karpor?
 

ui/public/index.html

@@ -25,10 +25,10 @@
   <meta name="keywords"
     content="Kubernetes,Search,AI,Kubernetes Explorer,Kubernetes Dashboard,Cloud Native,Multi Cluster" />
   <meta name="description"
-    content="Advanced Search and Insight capabilities for your Kubernetes clusters across any clouds. Powered by LLM, providing real-time insights and expert-level solutions." />
+    content="Advanced Search and Insight capabilities for your Kubernetes clusters across any clouds. Powered by LLM, providing real-time insights and expert-level solutions" />
   <!-- Open Graph Meta Tags for better social sharing -->
   <meta property="og:title" content="Karpor - Intelligence for Kubernetes" />
-  <meta property="og:description" content="Advanced Search and Insight capabilities for your Kubernetes clusters across any clouds. Powered by LLM, providing real-time insights and expert-level solutions." />
+  <meta property="og:description" content="Advanced Search and Insight capabilities for your Kubernetes clusters across any clouds. Powered by LLM, providing real-time insights and expert-level solutions" />
   <meta property="og:type" content="website" />
   <meta property="og:site_name" content="Karpor" />
   <meta property="og:locale" content="en_US" />
@@ -39,7 +39,7 @@
   <!-- Twitter Card Meta Tags -->
   <meta name="twitter:card" content="summary_large_image" />
   <meta name="twitter:title" content="Karpor - Intelligence for Kubernetes" />
-  <meta name="twitter:description" content="Advanced Search and Insight capabilities for your Kubernetes clusters across any clouds. Powered by LLM, providing real-time insights and expert-level solutions." />
+  <meta name="twitter:description" content="Advanced Search and Insight capabilities for your Kubernetes clusters across any clouds. Powered by LLM, providing real-time insights and expert-level solutions" />
   <meta name="twitter:image" content="%PUBLIC_URL%/logo512.png" />
   <!-- Additional SEO Meta Tags -->
   <meta name="robots" content="index, follow" />