feat(SPV-1340): fix create paymail model

commands/paymails.go

@@ -5,9 +5,9 @@ import "github.com/bitcoin-sv/spv-wallet-go-client/internal/api/v1/queryparams"
 // CreatePaymail defines the parameters required to create a new paymail address,
 // including associated metadata such as the public name and avatar.
 type CreatePaymail struct {
-	Metadata   queryparams.Metadata `json:"metadata"`    // Metadata associated with the paymail as key-value pairs.
-	Key        string               `json:"key"`         // The xpub key linked to the paymail.
-	Address    string               `json:"address"`     // The paymail address to be created.
-	PublicName string               `json:"public_name"` // The public display name associated with the paymail.
-	Avatar     string               `json:"avatar"`      // The URL of the paymail's avatar image.
+	Metadata   queryparams.Metadata `json:"metadata"`   // Metadata associated with the paymail as key-value pairs.
+	Key        string               `json:"key"`        // The xpub key linked to the paymail.
+	Address    string               `json:"address"`    // The paymail address to be created.
+	PublicName string               `json:"publicName"` // The public display name associated with the paymail.
+	Avatar     string               `json:"avatar"`     // The URL of the paymail's avatar image.
 }