fix(markdown): fix relative asserts path

Author: Mister-Hope

packages/@vuepress/markdown/__tests__/plugins/assetsPlugin.spec.ts

@@ -15,6 +15,8 @@ const source = [
   '![empty]()',
   '![alias](@alias/foo.png)',
   '![~alias](~@alias/foo.png)',
+  '![中国](./中国.png)',
+  '![finish](./100%.png)',
 ].join('\n\n')
 
 describe('@vuepress/markdown > plugins > assetsPlugin', () => {
@@ -40,6 +42,8 @@ describe('@vuepress/markdown > plugins > assetsPlugin', () => {
         '<img src="" alt="empty">',
         '<img src="@alias/foo.png" alt="alias">',
         '<img src="~@alias/foo.png" alt="~alias">',
+        '<img src="@source/sub/中国.png" alt="中国">',
+        '<img src="@source/sub/100%.png" alt="finish">',
       ]
         .map((item) => `<p>${item}</p>`)
         .join('\n') + '\n'
@@ -70,6 +74,8 @@ describe('@vuepress/markdown > plugins > assetsPlugin', () => {
         '<img src="" alt="empty">',
         '<img src="@alias/foo.png" alt="alias">',
         '<img src="~@alias/foo.png" alt="~alias">',
+        '<img src="@foo/sub/中国.png" alt="中国">',
+        '<img src="@foo/sub/100%.png" alt="finish">',
       ]
         .map((item) => `<p>${item}</p>`)
         .join('\n') + '\n'
@@ -96,6 +102,8 @@ describe('@vuepress/markdown > plugins > assetsPlugin', () => {
         '<img src="" alt="empty">',
         '<img src="@alias/foo.png" alt="alias">',
         '<img src="~@alias/foo.png" alt="~alias">',
+        '<img src="./%E4%B8%AD%E5%9B%BD.png" alt="中国">',
+        '<img src="./100%25.png" alt="finish">',
       ]
         .map((item) => `<p>${item}</p>`)
         .join('\n') + '\n'

packages/@vuepress/markdown/src/plugins/assetsPlugin.ts

@@ -1,4 +1,5 @@
 import type { PluginWithOptions } from 'markdown-it'
+import { decode } from 'mdurl'
 import { path } from '@vuepress/utils'
 import type { MarkdownEnv } from '../types'
 
@@ -29,7 +30,8 @@ export const assetsPlugin: PluginWithOptions<AssetsPluginOptions> = (
       // add `@source` alias to the link
       const resolvedLink = `${relativePathPrefix}/${path.join(
         path.dirname(env.filePathRelative),
-        link
+        // decode link to the origin one so that bundler can find the file correctly
+        decode(link)
       )}`
 
       // replace the original link with absolute path