vmstat: fix format

Co-authored-by: Krysztal Huang <[email protected]>

Author: Bluemangoo

src/uu/vmstat/src/vmstat.rs

@@ -123,7 +123,7 @@ fn get_io_info() -> (String, String, String) {
         "-----io----".into(),
         "   bi    bo".into(),
         format!(
-            "{:>4.0} {:>4.0}",
+            "{:>5.0} {:>5.0}",
             *read_bytes as f64 / uptime,
             *write_bytes as f64 / uptime
         ),