docs: update content

Author: mrholek

packages/docs/content/components/button-group.mdx

@@ -49,7 +49,7 @@ These classes can also be added to groups of links, as an alternative to the `<C
 <CButtonGroup>
   <CButton href="#" color="primary" active>Active link</CButton>
   <CButton href="#" color="primary">Link</CButton>
-  <CButton href="#" color="primary"> Link</CButton>
+  <CButton href="#" color="primary">Link</CButton>
 </CButtonGroup>
 ```