Fix typo in test method's name

Author: akiojalehto

dev/tests/functional/tests/app/Magento/Checkout/Test/Block/Onepage/Shipping/Method.php

@@ -91,7 +91,7 @@ public function selectShippingMethod(array $method)
      * @param array $method
      * @return bool
      */
-    public function isShippingMethodAvaiable(array $method)
+    public function isShippingMethodAvailable(array $method)
     {
         $this->waitForShippingRates();
         $selector = sprintf($this->shippingMethod, $method['shipping_method'], $method['shipping_service']);

dev/tests/functional/tests/app/Magento/Shipping/Test/Constraint/AssertCityBasedShippingRateChanged.php

@@ -33,7 +33,7 @@ public function processAssert(CheckoutOnepage $checkoutOnepage, $shippingMethod,
         $shippingAvailability = $isShippingAvailable ? 'avaiable' : 'unavailable';
         \PHPUnit_Framework_Assert::assertEquals(
             $isShippingAvailable,
-            $checkoutOnepage->getShippingMethodBlock()->isShippingMethodAvaiable($shippingMethod),
+            $checkoutOnepage->getShippingMethodBlock()->isShippingMethodAvailable($shippingMethod),
             "Shipping rates for {$shippingMethod['shipping_service']} should be $shippingAvailability."
         );
     }