docs(tvix/store): fix reference

Change-Id: Ifb77097755f25aa6536c60365941507a592cac3e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10399
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: edef <edef@edef.eu>

tvix/store/src/pathinfoservice/nix_http.rs

@@ -35,8 +35,8 @@ use super::PathInfoService;
 ///
 /// The client is expected to be (indirectly) using the same [BlobService] and
 /// [DirectoryService], so able to fetch referred Directories and Blobs.
-/// [PathInfoService::put] and [PathInfoService::nar] are not implemented and
-/// return an error if called.
+/// [PathInfoService::put] and [PathInfoService::calculate_nar] are not
+/// implemented and return an error if called.
 /// TODO: what about reading from nix-cache-info?
 pub struct NixHTTPPathInfoService {
     base_url: url::Url,