improve script type descriptions and help text

src/main/java/com/sparrowwallet/sparrow/wallet/SettingsController.java

@@ -24,6 +24,7 @@ import javafx.fxml.FXMLLoader;
 import javafx.fxml.Initializable;
 import javafx.scene.control.*;
 import javafx.scene.layout.StackPane;
+import javafx.util.StringConverter;
 import org.controlsfx.control.RangeSlider;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -105,6 +106,18 @@ public class SettingsController extends WalletFormController implements Initiali
             }
         });
 
+        scriptType.setConverter(new StringConverter<>() {
+            @Override
+            public String toString(ScriptType scriptType) {
+                return scriptType.getDescription();
+            }
+
+            @Override
+            public ScriptType fromString(String string) {
+                return ScriptType.fromDescriptor(string);
+            }
+        });
+
         scriptType.getSelectionModel().selectedItemProperty().addListener((observable, oldValue, scriptType) -> {
             if(scriptType != null) {
                 walletForm.getWallet().setScriptType(scriptType);

src/main/resources/com/sparrowwallet/sparrow/wallet/settings.fxml

@@ -57,7 +57,7 @@
                                 </FXCollections>
                             </items>
                         </ComboBox>
-                        <HelpLabel helpText="P2WPKH and P2WSH are Native Segwit types and are usually the best choice.\nP2SH-P2WPKH and P2SH-P2WSH are Wrapped Segwit types and a good choice for the widest compatibility.\nP2PKH and P2SH are Legacy types and should be avoided, unless configuring an old wallet." />
+                        <HelpLabel helpText="Native Segwit types are the default and are usually the best choice.\nNested Segwit types are a good choice for the widest compatibility with older wallets.\nLegacy types should be avoided, unless configuring an old wallet." />
                     </Field>
                 </Fieldset>
             </Form>