Fix doc comments

drift/lib/src/runtime/query_builder/expressions/datetimes.dart

@@ -357,7 +357,7 @@ final class DateTimeModifier extends Constant<String> {
   /// Adds or subtracts [seconds] seconds from this date time value.
   ///
   /// Note that drift assumes date time values to be encoded as unix timestamps
-  /// (with second accuracy) in the 1⁰5database. So adding seconds with a
+  /// (with second accuracy) in the database. So adding seconds with a
   /// fractional value may not always be preserved in a chain of computation.
   const DateTimeModifier.seconds(num seconds) : this._('$seconds seconds');
 

drift/lib/src/runtime/query_builder/statements/select/custom_select.dart

@@ -87,7 +87,8 @@ class QueryRow {
   /// Interprets the column named [key] under the known drift type [type].
   ///
   /// Like [read], except that the [type] is fixed and not inferred from the
-  /// type parameter [T].
+  /// type parameter [T]. Also, this method does not support nullable values -
+  /// use [readNullableWithType] if needed.
   @optionalTypeArgs
   T readWithType<T extends Object>(BaseSqlType<T> type, String key) {
     return _db.typeMapping.read(type, data[key])!;