MAGETWO-65232: Product name does not display special characters properly

- Updated automated test script.

Author: VeronikaYarats

app/code/Magento/Sales/Test/Mftf/ActionGroup/AdminInvoiceActionGroup.xml

@@ -52,7 +52,7 @@
         <waitForPageLoad stepKey="waitForInvoicePageLoad"/>
     </actionGroup>
 
-    <actionGroup name="clearInvoicesGridFilers">
+    <actionGroup name="clearInvoicesGridFilters">
         <amOnPage url="{{AdminInvoicesPage.url}}" stepKey="goToInvoices"/>
         <waitForPageLoad stepKey="waitInvoicesGridToLoad"/>
         <conditionalClick selector="{{AdminDataGridHeaderSection.clearFilters}}" dependentSelector="{{AdminDataGridHeaderSection.clearFilters}}" visible="true" stepKey="clearFilters" />