docs(CNavbar): update offcanvas examples

Author: mrholek

packages/docs/content/components/navbar.mdx

@@ -1189,6 +1189,7 @@ export const OffcanvasExample = () => {
   return (
     <CNavbar colorScheme="light" className="bg-light">
       <CContainer fluid>
+        <CNavbarBrand>Offcanvas navbar</CNavbarBrand>
         <CNavbarToggler
           aria-controls="offcanvasNavbar"
           aria-label="Toggle navigation"
@@ -1246,6 +1247,7 @@ const [visible, setVisible] = useState(false)
 return (
   <CNavbar colorScheme="light" className="bg-light">
     <CContainer fluid>
+      <CNavbarBrand>Offcanvas navbar</CNavbarBrand>
       <CNavbarToggler
         aria-controls="offcanvasNavbar"
         aria-label="Toggle navigation"
@@ -1301,6 +1303,7 @@ export const OffcanvasExample2 = () => {
   return (
     <CNavbar colorScheme="light" className="bg-light" expand="xxl">
       <CContainer fluid>
+        <CNavbarBrand>Offcanvas navbar</CNavbarBrand>
         <CNavbarToggler
           aria-controls="offcanvasNavbar2"
           aria-label="Toggle navigation"
@@ -1357,6 +1360,7 @@ export const OffcanvasExample2 = () => {
 const [visible, setVisible] = useState(false)
 return (
   <CNavbar colorScheme="light" className="bg-light" expand="xxl">
+    <CNavbarBrand>Offcanvas navbar</CNavbarBrand>
     <CContainer fluid>
       <CNavbarToggler
         aria-controls="offcanvasNavbar2"