fix: compilation

Author: itsyaasir

docs/client/transaction_reversal.md

@@ -29,7 +29,6 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .try_timeout_url("https://testdomain.com/err")?
         .transaction_id("OEI2AK4Q16")
         .remarks("test")
-        .receiver_identifier_type(mpesa::IdentifierTypes::Reversal) // optional will default to IdentifierTypes::Reversal
         .amount(100)
         .receiver_party("600111")
         .build()?