Function put_doc_format 

pub async fn put_doc_format(
    __arg0: State<App>,
    tn_id: TnId,
    __arg2: Auth,
    __arg3: IdTag,
    __arg4: OptionalRequestId,
    __arg5: Path<String>,
    __arg6: Json<PutDocFormat>,
) -> ClResult<(StatusCode, Json<ApiResponse<Option<DocFormat>>>)>

PUT /api/doc-formats/{content_type} — register or update a manifest.