fix typo

Signed-off-by: Ruihang Xia <[email protected]>

src/metric-engine/src/test_util.rs

@@ -267,7 +267,7 @@ pub fn row_schema_with_tags(tags: &[&str]) -> Vec<PbColumnSchema> {
 /// Build [Row]s for assembling [RegionPutRequest](store_api::region_request::RegionPutRequest).
 ///
 /// The schema is generated by [row_schema_with_tags]. `num_tags` doesn't need to be precise,
-/// it's used to determin the column id for new columns.
+/// it's used to determine the column id for new columns.
 pub fn build_rows(num_tags: usize, num_rows: usize) -> Vec<Row> {
     let mut rows = vec![];
     for i in 0..num_rows {