Have you read the Contributing Guidelines on issues?

• I have read the Contributing Guidelines on issues.

Prerequisites

• I'm using the latest version of Docusaurus.
• I have tried the npm run clear or yarn clear command.
• I have tried rm -rf node_modules yarn.lock package-lock.json and re-installing packages.
• I have tried creating a repro with https://new.docusaurus.io.
• I have read the console error message carefully (if applicable).

Description

When using showLastUpdateAuthor and showLastUpdateTime in Vietnamese language, there is a typo when the word "bởi" (which means "by") duplicates twice.

Reproducible demo

No response

Steps to reproduce

In your docusaurus.config.js:

i18n: {
		defaultLocale: "vi",
		locales: ["vi"],
	},
presets: [
		[
			//...
			({
				docs: {
					showLastUpdateAuthor: true,
					showLastUpdateTime: true,
				}
			}),
		],
	],

Expected behavior

It should be "Cập nhật lần cuối vào Date bởi Author"

Actual behavior

Instead of "Cập nhật lần cuối vào Date bởi bởi Author"

Your environment

• Public source code:
• Public site URL:
• Docusaurus version used:
• Environment name and version (e.g. Chrome 89, Node.js 16.4):
• Operating system and version (e.g. Ubuntu 20.04.2 LTS):

Self-service

• I'd be willing to fix this bug myself.