Fix editing payment amount not accepting different number of cents than initial value

pages/editpayment.php

@@ -96,6 +96,7 @@ if (!empty($_GET['id']) && $database->has('payments', ['paymentid' => $_GET['id'
                         "name" => "amount",
                         "type" => "number",
                         "maxlength" => 5,
+                        "step" => "0.01",
                         "value" => $data["amount"],
                         "width" => 2,
                         "error" => "Enter a dollar amount."
@@ -106,6 +107,7 @@ if (!empty($_GET['id']) && $database->has('payments', ['paymentid' => $_GET['id'
                         "name" => "amountpaid",
                         "type" => "number",
                         "maxlength" => 5,
+                        "step" => "0.01",
                         "value" => $data["amountpaid"],
                         "width" => 2,
                         "error" => "Enter a dollar amount."
@@ -165,6 +167,13 @@ if (!empty($_GET['id']) && $database->has('payments', ['paymentid' => $_GET['id'
                                            }
                                            ?>
                                            <?php
+                                           if (!empty($item['step'])) {
+                                               ?>
+                                               step="<?php echo htmlspecialchars($item['step']); ?>"
+                                               <?php
+                                           }
+                                           ?>
+                                           <?php
                                            if (!empty($item['value'])) {
                                                ?>
                                                value="<?php echo htmlspecialchars($item['value']); ?>"