DocCards incorrectly pluralise the number of elements within them when only one is present

[olijeffers0n]

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 a categories contain only a single item, it is correctly pluralised. See https://github.com/facebook/docusaurus/blob/main/packages/docusaurus-theme-classic/src/theme/DocCard/index.tsx#L35 - There appears to be some reference to pluralisation, however i get 1 items

Reproducible demo

No response

Steps to reproduce

https://github.com/PaperMC/docs Repo, and look at our Misc Project with the Tools category

Expected behavior

1 Item

Actual behavior

1 Items

Your environment

• Public source code: https://github.com/PaperMC/docs
• Public site URL: https://docs.papermc.io/
• Docusaurus version used: 3.2.1
• Environment name: Chrome
• Operating system and version: Ubuntu 20.04.2

Self-service

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

[Josh-Cena]

Yes... I think the English version needs plural categories too.

[slorber]

Hmmm yes, I actually just noticed that as well as part of this other PR: #10111 (review)

Sadly, all the theme-translation languages have a single plural form too. I'll do my best to fix them with google translate, but there will probably be mistakes for some languages.