correct typo + add subheading

contributors.qmd

@@ -12,7 +12,7 @@ The one-time registration process proceeds as follows:
 2. Ensure that the repository hosts a [GitHub release](https://docs.github.com/en/repositories/releasing-projects-on-github/managing-releases-in-a-repository) or [GitLab release](https://docs.gitlab.com/ee/user/project/releases/) for the latest version intended for distribution. Example: <https://github.com/r-lib/gh/releases/tag/v1.4.0>. Pre-releases (GitHub) and upcoming releases (GitLab) are ignored to ensure each release has the full endorsement of its maintainer.
 3. Open a [GitHub pull request](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/proposing-changes-to-your-work-with-pull-requests/about-pull-requests) to <https://github.com/r-releases/contributions> to contribute one or more text files to the [`packages` folder](https://github.com/r-releases/contributions/tree/main/packages) with R package listings.
 
-The overwhelming majority of text files in (3) will be in simple URL format, which has has 3 requirements:
+The overwhelming majority of text files in (3) will be in simple URL format, which has these requirements:
 
 1. The name of the file is the package name.
 2. The file contains a single line with the package URL. The URL must be authentic and genuine. It must be the true GitHub/GitLab location of the package according to its owners, or an active mirror of the true location.
@@ -28,6 +28,7 @@ In rare cases, the package may be in a subdirectory of a GitHub repo, in which c
   "branch": "*release"
 }
 ```
+## How to create a badge
 
 [<img src="https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fr-releases.r-universe.dev%2Fapi%2Fpackages%2Fmirai&query=%24.Version&label=R-releases" alt="R-releases status" />](https://r-releases.r-universe.dev/mirai)