docs: update content

Author: mrholek

packages/docs/content/components/dropdown.mdx

@@ -518,7 +518,7 @@ In the following example we use `div` instead of `<CDropdownMenu>` to show `<CDr
 Place any freeform text within a dropdown menu with text. Note that you'll likely need additional sizing styles to constrain the menu width.
 
 ```jsx preview
-<CDropdownMenu className="p-4 text-muted" style={{ maxWidth: '200px' }}>
+<CDropdownMenu className="p-4 text-body-secondary" style={{ maxWidth: '200px' }}>
   <p>Some example text that's free-flowing within the dropdown menu.</p>
   <p className="mb-0">And this is more example text.</p>
 </CDropdownMenu>

packages/docs/content/templates/admin-dashboard.mdx

@@ -27,7 +27,7 @@ Check out the fully-featured, ready-to-use admin dashboard templates built using
       <CCardBody>
         <CLink className="text-decoration-none text-reset" href="https://coreui.io/react/#compare" target="_blank">
           <CCardTitle>Free React Admin Template</CCardTitle>
-          <CCardSubtitle className="mb-3 text-muted">Default Theme</CCardSubtitle>
+          <CCardSubtitle className="mb-3 text-body-secondary">Default Theme</CCardSubtitle>
           <CImage className="rounded shadow-sm" fluid src="https://coreui.io/images/templates/coreui_free_1440.webp" alt=""/>
         </CLink>
       </CCardBody>
@@ -38,7 +38,7 @@ Check out the fully-featured, ready-to-use admin dashboard templates built using
       <CCardBody>
         <CLink className="text-decoration-none text-reset" href="https://coreui.io/product/react-dashboard-template/?theme=default-v3" target="_blank">
           <CCardTitle>React Dashboard Template</CCardTitle>
-          <CCardSubtitle className="mb-3 text-muted">Default Theme v3</CCardSubtitle>
+          <CCardSubtitle className="mb-3 text-body-secondary">Default Theme v3</CCardSubtitle>
           <CImage className="rounded shadow-sm" fluid src="https://coreui.io/images/templates/coreui_pro_default_v3_1440.webp" alt=""/>
         </CLink>
       </CCardBody>
@@ -49,7 +49,7 @@ Check out the fully-featured, ready-to-use admin dashboard templates built using
       <CCardBody>
         <CLink className="text-decoration-none text-reset" href="https://coreui.io/product/react-dashboard-template/?theme=light-v3" target="_blank">
           <CCardTitle>React Dashboard Template</CCardTitle>
-          <CCardSubtitle className="mb-3 text-muted">Light Theme v3</CCardSubtitle>
+          <CCardSubtitle className="mb-3 text-body-secondary">Light Theme v3</CCardSubtitle>
           <CImage className="rounded shadow-sm" fluid src="https://coreui.io/images/templates/coreui_pro_light_v3_1440.webp" alt=""/>
         </CLink>
       </CCardBody>
@@ -60,7 +60,7 @@ Check out the fully-featured, ready-to-use admin dashboard templates built using
       <CCardBody>
         <CLink className="text-decoration-none text-reset" href="https://coreui.io/product/react-dashboard-template/?theme=default" target="_blank">
           <CCardTitle>React Dashboard Template</CCardTitle>
-          <CCardSubtitle className="mb-3 text-muted">Default Theme</CCardSubtitle>
+          <CCardSubtitle className="mb-3 text-body-secondary">Default Theme</CCardSubtitle>
           <CImage className="rounded shadow-sm" fluid src="https://coreui.io/images/templates/coreui_pro_default_1440.webp" alt=""/>
         </CLink>
       </CCardBody>
@@ -71,7 +71,7 @@ Check out the fully-featured, ready-to-use admin dashboard templates built using
       <CCardBody>
         <CLink className="text-decoration-none text-reset" href="https://coreui.io/product/react-dashboard-template/?theme=light" target="_blank">
           <CCardTitle>React Dashboard Template</CCardTitle>
-          <CCardSubtitle className="mb-3 text-muted">Light Theme</CCardSubtitle>
+          <CCardSubtitle className="mb-3 text-body-secondary">Light Theme</CCardSubtitle>
           <CImage className="rounded shadow-sm" fluid src="https://coreui.io/images/templates/coreui_pro_light_1440.webp" alt=""/>
         </CLink>
       </CCardBody>
@@ -82,7 +82,7 @@ Check out the fully-featured, ready-to-use admin dashboard templates built using
       <CCardBody>
         <CLink className="text-decoration-none text-reset" href="https://coreui.io/product/react-dashboard-template/?theme=dark" target="_blank">
           <CCardTitle>React Dashboard Template</CCardTitle>
-          <CCardSubtitle className="mb-3 text-muted">Dark Theme</CCardSubtitle>
+          <CCardSubtitle className="mb-3 text-body-secondary">Dark Theme</CCardSubtitle>
           <CImage className="rounded shadow-sm" fluid src="https://coreui.io/images/templates/coreui_pro_dark_1440.webp" alt=""/>
         </CLink>
       </CCardBody>