fix: add config to ignore dead links during build

docs/.vitepress/config.ts

@@ -23,6 +23,7 @@ export default defineConfig({
             },
         },
     },
+    ignoreDeadLinks: true
 })
 
 customElements // custom element tags of markdown-it-katex in vitepress

docs/.vitepress/config/theme.ts

@@ -29,7 +29,6 @@ export const themeConfig: DefaultTheme.Config = {
         { icon: 'github', link: 'https://github.com/andatoshiki' },
         { icon: 'twitter', link: 'https://twitter.com/andatoshiki' },
     ],
-    ignoreDeadLinks: true
     // custom vue components
     // @ts-ignore
     // surpress errors originated from the lines below of custom coponent configs in typescript