tools: replace deprecated eslint-plugin-markdown

PR-URL: #60908
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Ulises Gascón <ulisesgascongonzalez@gmail.com>

Author: targos

eslint.config.mjs

@@ -20,7 +20,7 @@ const { default: js } = await importEslintTool('@eslint/js');
 const { default: babelEslintParser } = await importEslintTool('@babel/eslint-parser');
 const babelPluginSyntaxImportSource = resolveEslintTool('@babel/plugin-syntax-import-source');
 const { default: jsdoc } = await importEslintTool('eslint-plugin-jsdoc');
-const { default: markdown } = await importEslintTool('eslint-plugin-markdown');
+const { default: markdown } = await importEslintTool('@eslint/markdown');
 const { default: stylisticJs } = await importEslintTool('@stylistic/eslint-plugin');
 
 nodeCore.RULES_DIR = fileURLToPath(new URL('./tools/eslint-rules', import.meta.url));