updated stepkey name in AdminOpenCMSPagesGridActionGroup

Author: vovsky

app/code/Magento/Cms/Test/Mftf/ActionGroup/AdminOpenCMSPagesGridActionGroup.xml

@@ -9,6 +9,6 @@
               xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
     <actionGroup name="AdminOpenCMSPagesGridActionGroup">
         <amOnPage url="{{CmsPagesPage.url}}" stepKey="navigateToCMSPagesGrid"/>
-        <waitForPageLoad stepKey="waitForPageLoad1"/>
+        <waitForPageLoad stepKey="waitForPageLoad"/>
     </actionGroup>
 </actionGroups>