Feat: Add links to "Open a PR" on resources pages (plugins.mdx & community-content.mdx)

CONTRIBUTING.md

@@ -288,6 +288,108 @@ To add a language, you will need its BCP-47 tag and a label. See [“Adding a ne
 [vitest]: https://vitest.dev/
 [playwright]: https://playwright.dev/
 
+## Plugins and Integrations
+
+It's great to see plugins and other integrations enhance or change features of Starlight.
+We have a collection of plugins and tools on our [plugins](https://starlight.astro.build/resources/plugins/) page.
+If you’ve built a Starlight plugin, theme or some other tool, adding it to the plugin page is just a pull request away!
+
+1. Set up a development environment by following the [“Setting up a development environment”](#setting-up-a-development-environment) instructions.
+2. Add a new entry for your plugin or tool in the right section in `docs/src/content/docs/resources/plugins.mdx`.
+
+   - The new entry must be appended at the end of an existing list.
+   - The `href` attribute must be the URL of your Starlight site. If your documentation is hosted on a subdomain or subdirectory, include that in the URL.
+   - The `title` attribute must be the name of your site with no extra details.
+   - The `description` attribute must be a short and accurate description of what your plugin or tool does or what your theme offers.
+
+   ```diff
+     <LinkCard
+       href="https://github.com/ghost/starlight-plugin-example"
+       title="starlight-plugin-example"
+       description="Add blog to your documentation."
+     />
+     <LinkCard
+       href="https://github.com/ghost/starlight-plugin-last-example"
+       title="starlight-plugin-last-example"
+       description="Add badge to your headings."
+     />
+   + <LinkCard
+   +   href="https://github.com/ghost/starlight-plugin-new-example"
+   +   title="starlight-plugin-new-example"
+   +   description="Add astronaut image to bottom right corner."
+   + />
+   </CardGrid>
+   ```
+
+3. Open a pull request on GitHub to add your changes.
+
+## Community Content
+
+We love when people create content around Starlight and share it on our [community content](https://starlight.astro.build/resources/community-content/)
+If you’ve published some content that's related to Starlight, adding it to the community content page is just a pull request away!
+
+1. Set up a development environment by following the [“Setting up a development environment”](#setting-up-a-development-environment) instructions.
+2. Add a new entry for your content in the right section in `docs/src/content/docs/resources/community-content.mdx`.
+
+   - The new entry must be appended at the end of an existing list.
+   - The `href` attribute must be the URL to your content (post on X, some blog, ...). If your documentation is hosted on a subdomain or subdirectory, include that in the URL.
+   - The `title` attribute must be the name of your site with no extra details.
+   - The `description` attribute must be a short and accurate description of what the content is about.
+
+   ```diff
+     <LinkCard
+       href="https://example.net"
+       title="Content Example"
+       description="Some example of the community content list."
+     />
+     <LinkCard
+       href="https://example.org"
+       title="Last Content Example"
+       description="Last example of the community content list."
+     />
+   + <LinkCard
+   +   href="https://example.com"
+   +   title="New Content Example"
+   +   description="New example of the community content list."
+   + />
+   </CardGrid>
+   ```
+
+3. Open a pull request on GitHub to add your changes.
+
+### Video Content
+
+If the content you want to share is a YouTube video, you should add a new entry to the [video content section](https://starlight.astro.build/resources/community-content/#video-content). These entries differ in their properties. Therefore, step 2 is a little bit different:
+
+1. Set up a development environment by following the [“Setting up a development environment”](#setting-up-a-development-environment) instructions.
+2. Add a new entry for your content in the video section in `docs/src/content/docs/resources/community-content.mdx`.
+
+   - The new entry must be appended at the end of an existing list of the video content section.
+   - The `href` attribute must be the URL to your YouTube video. 
+   - The `title` attribute must be the YouTube title.
+   - The `description` attribute must be a short and accurate description of the video. If the YouTube description of your video is short, you can copy and paste it. 
+
+   ```diff
+     {
+       href: 'https://www.youtube.com/watch?v=5u0Ds7wzUeI',
+       title: 'Starlight by Astro',
+       description: 'Watch the official Starlight launch video',
+     },
+     {
+       href: 'https://www.youtube.com/shorts/zjOWezSzd18',
+       title: '🌟 SUB 1 MINUTE RUN',
+       description: 'Watch Ben launch a new Starlight site in under a minute!',
+     },
+   + {
+   +   href: 'https://www.youtube.com/watch?v=dQw4w9WgXcQ',
+   +   title: 'Rick Astley - Never Gonna Give You Up (Official Music Video)k',
+   +   description: "The official video for “Never Gonna Give You Up” by Rick Astley.",
+   + },
+   ]}
+   ```
+
+3. Open a pull request on GitHub to add your changes. Just please don't try to add “Never Gonna Give You Up” by Rick Astley to our videos like the example above ;)
+
 ## Showcase
 
 We love to see websites built with Starlight and share them with the community on our [showcase](https://starlight.astro.build/resources/showcase/) page.

docs/src/content/docs/resources/community-content.mdx

@@ -5,7 +5,7 @@ description: Discover community-produced guides, articles and videos to help you
 
 :::tip[Add your own!]
 Have you produced content about Starlight?
-Open a PR adding a link to this page!
+[Open a PR](https://github.com/withastro/starlight/blob/main/CONTRIBUTING.md#community-content) adding a link to this page!
 :::
 
 import { CardGrid, LinkCard } from '@astrojs/starlight/components';

docs/src/content/docs/resources/plugins.mdx

@@ -7,7 +7,7 @@ sidebar:
 
 :::tip[Add your own!]
 Have you built a plugin or a tool for Starlight?
-Open a PR adding a link to this page!
+[Open a PR](https://github.com/withastro/starlight/blob/main/CONTRIBUTING.md#plugins-and-integrations) adding a link to this page!
 :::
 
 ## Plugins