Fixed some test case issues

Author: govindasharma974

app/code/Magento/Sales/Controller/Adminhtml/Order/CreditmemoLoader.php

@@ -183,7 +183,7 @@ public function load()
         if ($creditmemoId) {
             try {
                 $creditmemo = $this->creditmemoRepository->get($creditmemoId);
-            } catch (\Exception $e) {    
+            } catch (\Exception $e) {
                 $this->messageManager->addErrorMessage(__('This creditmemo no longer exists.'));
                 return false;
             }

app/code/Magento/Sales/Test/Mftf/Test/AdminOpenCreditmemoViewPageWithWrongCreditmemoIdTest.xml

@@ -31,7 +31,7 @@
 
         <waitForPageLoad stepKey="waitForPageLoad"/>
 
-        <seeInCurrentUrl url="{{AdminCreditmemosGridPage.url}}" stepKey="redirectToCreditmemosGridPage"/>
+        <seeInCurrentUrl url="{{AdminCreditMemosGridPage.url}}" stepKey="redirectToCreditMemosGridPage"/>
 
         <see selector="{{AdminMessagesSection.error}}" userInput='This creditmemo no longer exists.'
              stepKey="seeErrorMessage"/>

app/code/Magento/Shipping/Test/Unit/Controller/Adminhtml/Order/Shipment/ViewTest.php

@@ -87,7 +87,6 @@ class ViewTest extends TestCase
      */
     protected $pageTitleMock;
 
-
     /**
      * @var \Magento\Shipping\Controller\Adminhtml\Order\Shipment\View
      * @var RedirectFactory|MockObject
@@ -104,7 +103,6 @@ class ViewTest extends TestCase
      */
     protected $controller;
 
-
     protected function setUp(): void
     {
         $this->requestMock = $this->getMockBuilder(RequestInterface::class)