fix(component): remove "All Rights Reserved" from <Footer.Copyright>

We shouldn't require this phrase to use the component. Now you can just add "All Rights Reserved" to
the `<Footer.Copyright by=""/>` field, if you would like to.

src/lib/components/Footer/FooterCopyright.tsx

@@ -15,13 +15,12 @@ export const FooterCopyright: FC<CopyrightProps> = ({ href, by, year }) => {
       <span className={theme.base}>
         © {year}
         {href ? (
-          <a href={href} className={theme.base}>
+          <a href={href} className={theme.href}>
             {by}
           </a>
         ) : (
           <span className={theme.span}>{by}</span>
         )}
-        . All Rights Reserved.
       </span>
     </div>
   );