Link to both eslint-plugin-vue error info URL and style guide URL

[octref]

Follow up with vuejs/eslint-plugin-vue#439 (comment)

URL:

const getRuleURI = require('eslint-rule-documentation');

getRuleURI('vue/require-v-for-key');

Style Guide: Already included in the error message

[octref]

Pending on upstream changes, microsoft/vscode#54272.