inconsistency between github documentation and Swagger documentation

[sami-bel]

Hi I found some inconsistency in the types:

ProductAvailabilityTimesType

• Period field:

1. it is singular but in github documentation but it is plural (Periods) in Swagger documentation.
2. it is PeriodType type but in Swagger documentation it is a list of Period

OpeningTimesType

• Period field: it is PeriodType type but in Swagger documentation it is a list of Period