chore: add ccu to website description

Author: andy23512

src/index.html

@@ -9,7 +9,7 @@
     <base href="/" />
     <meta
       name="description"
-      content="Device Comparator is an unofficial comparison website. You can compare the differences between the specs of CharaChorder One (CC1), CharaChorder Two (CC2), CharaChorder Lite (CCL), CharaChorder X (CCX), Master Forge (M4G) and Svalboard (Sval) on this website."
+      content="Device Comparator is an unofficial comparison website. You can compare the differences between the specs of CharaChorder One (CC1), CharaChorder Two (CC2), CharaChorder Lite (CCL), CharaChorder X (CCX), CCU, Master Forge (M4G) and Svalboard (Sval) on this website."
     />
     <meta
       name="keywords"