fix build arguments in goreleaser yaml (#2347)

Co-authored-by: Le Tran <le.tran@kasten.io>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

.goreleaser.yml

@@ -63,8 +63,8 @@ dockers:
   build_flag_templates:
   - "--build-arg=kan_tools_version={{ .Tag }}"
 # Refers to https://github.com/kopia/kopia/commit/3551f743d762f2ffe669523272d1c8d734120b79
-  - "--build-arg=kopiaBuildCommit=3551f74"
-  - "--build-arg=kopiaRepoOrg=kopia"
+  - "--build-arg=kopia_build_commit=3551f74"
+  - "--build-arg=kopia_repo_org=kopia"
   extra_files:
   - 'LICENSE'
 - ids: