fix(stories): className

Author: xidedix

.storybook/preview.js

@@ -13,11 +13,11 @@ addDecorator(story => (
         <CRow> 
             <CCol lg="12" xs="12">
                 <CCard lg="12" xs="12"> 
-                    <h1 class="ml-3">CoreUI</h1>
+                    <h1 className="ml-3">CoreUI</h1>
                 </CCard>
             </CCol>
             {story()}
         </CRow>
     </CContainer>
   </>
-));
+));

stories/CWidgetBrand.stories.js

@@ -40,7 +40,7 @@ return <>
           leftHeader={leftHeader}
           leftFooter={leftFooter}
         >
-          <p class="m-4">Some brand</p>
+          <p className="m-4">Some brand</p>
         </CWidgetBrand>
       </CCardBody>
     </CCard>

stories/CWidgetDropdown.stories.js

@@ -42,7 +42,7 @@ return <>
           text={_text}
         >
           <CDropdown
-            class="float-right"
+            className="float-right"
             color="transparent p-0"
             placement="bottom-end"
           >