Update src/Std/Time.lean

Co-authored-by: Markus Himmel <[email protected]>

src/Std/Time.lean

@@ -57,7 +57,7 @@ converted because they use an internal type called `UnitVal`.
 
 Ordinal types represent specific bounded values in reference to another unit, e.g., `Day.Ordinal`
 represents a day in a month, ranging from 1 to 31. Some ordinal types like `Hour.Ordinal` and `Second.Ordinal`,
-allow for values beyond the normal range (e.g, 60 seconds) to accomodate special cases with leap seconds
+allow for values beyond the normal range (e.g, 60 seconds) to accommodate special cases with leap seconds
 like `23:59:60` that is valid in ISO 8601.
 
 - Ordinal types: