Delete unnecessary filename/frontmatter validation instructions

fa56eef12fd72da6f01e786304612ce03ba93a48
commit fa56eef12fd72da6f01e786304612ce03ba93a48
@@ -1,32 +1,13 @@
-## Change notes
+## Change notes
 
-Change-notes are Markdown files used to document user-facing changes. When making a change that affects users, create a markdown file here that describes the change. During the next release, the change-note files in `unreleased-change-notes/` will automatically be added to `CHANGELOG.md`.
+Change-notes are Markdown files used to document user-facing changes. When making a change that affects users, create a Markdown file here that describes the change. During the next release, the change-note files in `unreleased-change-notes/` will automatically be added to `CHANGELOG.md`.
 
 ### Change-note file format
 
 Change-note files must follow a certain format so that they can be automatically validated and processed. Failure to follow the format will result in a failed PR check.
 
 You may validate your change-note file locally by running `npx tsx pr-checks/changenotes.ts validate`. This command will scan all change-note files in `unreleased-change-notes/` and report any errors.
 
-#### File name
-
-Change-note files must be named according to the following pattern: `YYYY-MM-DD-<short-title>.md`, where `YYYY-MM-DD` is the date of the change and `<short-title>` is a short description of the change. The `<short-title>` must contain only lowercase letters (`a-z`), digits (`0-9`), and hyphens (`-`), and must start with a letter or digit. Hyphens may be used to separate words. For example, a change-note file for a JSON-related bug fix that was made on January 1st, 2020 might be named `2020-01-01-fix-json-bug.md`.
-
-#### Frontmatter
-
-The first line of the file must be a YAML frontmatter block, which is delimited by lines containing three dashes (`---`). The frontmatter block must contain a single `category` field, whose value must be one of the following categories:
-
-| Category | Description |
-| -------- | ----------- |
-| `breaking`    | A change that introduces backward-incompatible behavior. |
-| `feature`     | A new capability or behavior added to the Action. |
-| `improvement` | An enhancement to existing functionality or performance. |
-| `securityFix` | A change that addresses a security vulnerability. |
-| `fix`         | A bug fix that corrects unexpected behavior. |
-| `unship`      | Features or options that have been removed. |
-| `deprecation` | Deprecation of features that will be removed in future versions. |
-| `knownIssue`  | A known issue or limitation in the current release. |
-| `misc`        | Other changes that do not fit into other categories. |
 
 #### Body
 
@@ -38,10 +19,6 @@ The body of the change-note file must:
 ### Example change-note file
 
 ```
----
-category: fix
----
-
 - Fixed a bug where a network error while streaming the download of the CodeQL bundle could terminate the `init` Action instead of falling back to downloading the bundle before extracting it. [#4061](https://github.com/github/codeql-action/pull/4061)
 - Fix incorrect minimum required Git version for [improved incremental analysis](https://github.com/github/roadmap/issues/1158): it should have been 2.36.0, not 2.11.0. [#3781](https://github.com/github/codeql-action/pull/3781)
 ```