fix(salary_slip): update round() for remaining sub period

Author: nareshkannasln

hrms/payroll/doctype/salary_slip/salary_slip.py

@@ -1018,15 +1018,15 @@ def compute_current_and_future_taxable_earnings(self):
 		# get taxable_earnings for current period (all days)
 		self.current_taxable_earnings = self.get_taxable_earnings(self.tax_slab.allow_tax_exemption)
 		self.future_structured_taxable_earnings = self.current_taxable_earnings.taxable_earnings * (
-			ceil(self.remaining_sub_periods) - 1
+			round(self.remaining_sub_periods) - 1
 		)
 
 		current_taxable_earnings_before_exemption = (
 			self.current_taxable_earnings.taxable_earnings
 			+ self.current_taxable_earnings.amount_exempted_from_income_tax
 		)
 		self.future_structured_taxable_earnings_before_exemption = (
-			current_taxable_earnings_before_exemption * (ceil(self.remaining_sub_periods) - 1)
+			current_taxable_earnings_before_exemption * (round(self.remaining_sub_periods) - 1)
 		)
 
 		# get taxable_earnings, addition_earnings for current actual payment days