PB-365: Templates MFTF Test Coverage

- Fixing incorrect section reference

Author: dhaecker

app/code/Magento/PageBuilder/Test/Mftf/ActionGroup/TemplatesActionGroup.xml

@@ -501,7 +501,7 @@
         </arguments>
         <waitForPageLoad stepKey="waitForGridLoad"/>
         <waitForElementVisible selector="{{section.allRows}}" stepKey="waitForRows"/>
-        <seeNumberOfElements userInput="{{total}}" selector="{{PageBuilderTemplatesGrid.allRows}}" stepKey="seeNumberOfRows"/>
+        <seeNumberOfElements userInput="{{total}}" selector="{{section.allRows}}" stepKey="seeNumberOfRows"/>
     </actionGroup>
     <actionGroup name="clickNextPageOnPageBuilderTemplateGrid">
         <annotations>