The `CommitList` and `ChangedFileList` swagger responses documented an
`X-Total` response header that their endpoints never send, they send
`X-Total-Count` via `SetTotalCountHeader`. This renames the documented
header and regenerates the spec.
`repoGetAllCommits` also uses `CommitList` and sends both headers, so
the new name is accurate for all three endpoints.
Also corrects `ChangedFileList` describing its headers as commit counts.
Documentation only, no handler behaviour changes.
Fixes https://github.com/go-gitea/gitea/issues/22048
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Signed-off-by: davidpavlovschi <davidpavlov2048@gmail.com>
Co-authored-by: silverwind <me@silverwind.io>
