fix: better clarify market_protection as mandatory only for MARKET orders in placeOrder docblock

Author: ranjanrak

src/KiteConnect.php

@@ -468,7 +468,7 @@ public function getMargins(?string $segment = null): mixed
      *                $params int|null "auction_number" A unique identifier for a particular auction
      *                $params float|null  "tag" (Optional) Order tag
      *                $params string|null "validity" (Optional) Order validity (DAY, IOC).
-     *                $params float    "market_protection" Set to -1 for system-default market protection, or a percentage value greater than 0 up to 100
+     *                $params float    "market_protection" (Mandatory only for MARKET orders) Set to -1 for system-default market protection, or a percentage value greater than 0 up to 100
      * @return mixed|null
      * @throws DataException
      * @throws GeneralException