fix signature typo

Author: nerzh

Sources/WFPClient/WFPClient.swift

@@ -79,7 +79,7 @@ open class WFPClient {
         addSignItem(to: &string, request.merchantDomainName)
         addSignItem(to: &string, request.orderReference)
         addSignItem(to: &string, "\(request.orderDate)")
-        addSignItem(to: &string, "\(request.amount))")
+        addSignItem(to: &string, "\(request.amount)")
         addSignItem(to: &string, request.currency.rawValue)
         request.productName.forEach { (name) in
             addSignItem(to: &string, name)

WFPClient.podspec

@@ -9,7 +9,7 @@
 Pod::Spec.new do |s|
   s.name          = 'WFPClient'
   s.module_name   = 'WFPClient'
-  s.version       = '0.2.2'
+  s.version       = '0.2.3'
   s.summary       = 'WayForPay Swift Client for Apple Pay.'
   s.swift_version = '5.1'