convex-backend PR 64: fix broken internal link to generating file url(s) (#35810)

Fixes broken internal link on page https://docs.convex.dev/file-storage/serve-files

The internal page link to 'above' points to
https://docs.convex.dev/file-storage/serve-files#generating-file-url-in-queries
should be (note missing `s`)
https://docs.convex.dev/file-storage/serve-files#generating-file-urls-in-queries

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Co-authored-by: metareason <[email protected]>
GitOrigin-RevId: bd7066350f67ae9fe8b546d452c0400f89e62f2b

Author: 2 people

npm-packages/docs/docs/file-storage/serve-files.mdx

@@ -58,7 +58,7 @@ This enables access control at the time the file is served, such as when an
 image is displayed on a website. But note that the HTTP actions response size is
 [currently limited](/docs/functions/http-actions.mdx#limits) to 20MB. For larger
 files you need to use file URLs as described
-[above](#generating-file-url-in-queries).
+[above](#generating-file-urls-in-queries).
 
 A file [`Blob`](https://developer.mozilla.org/en-US/docs/Web/API/Blob) object
 can be generated from a storage ID by the