Fix broken links to frontmatter.js (#45568)

Author: sabrowning1

content/contributing/writing-for-github-docs/using-yaml-frontmatter.md

@@ -18,7 +18,7 @@ It is a block of key-value content that lives at the top of every Markdown file
 
 The following frontmatter values have special meanings and requirements for {% data variables.product.prodname_docs %}.
 There's also a schema that's used by the test suite to validate every page's frontmatter.
-For more information, see [`lib/frontmatter.js`](https://github.com/github/docs/blob/main/lib/frontmatter.js).
+For more information, see [`lib/frontmatter.js`](https://github.com/github/docs/blob/main/src/frame/lib/frontmatter.js).
 
 - [`versions`](#versions)
 - [`redirect_from`](#redirect_from)
@@ -47,7 +47,7 @@ For more information, see [`lib/frontmatter.js`](https://github.com/github/docs/
 
 - Purpose: Indicates the [versions](https://github.com/github/docs/blob/main/src/versions/lib/all-versions.js) to which a page applies.
 For more information about the different types of versioning, see "[Versioning documentation](/contributing/syntax-and-versioning-for-github-docs/versioning-documentation)."
-- Type: `Object`. Allowable keys map to product names and can be found in the `versions` object in [`lib/frontmatter.js`](https://github.com/github/docs/blob/main/lib/frontmatter.js).
+- Type: `Object`. Allowable keys map to product names and can be found in the `versions` object in [`lib/frontmatter.js`](https://github.com/github/docs/blob/main/src/frame/lib/frontmatter.js).
 - This frontmatter value is currently **required** for all pages.
 - The `*` is used to denote all releases for the version.