fix: typo

Author: sonofmagic

website/pages/docs/core.en-US.mdx

@@ -14,7 +14,7 @@ We can pass in parameters to: `@icestack/ui`.
 
 - You can also add different theme colors to the controls, such as `btn-primary`, `btn-secondary`, `btn-accent` to give them the theme color you want.
 
-- You can also provide them with more sizes including but not limited to `xs`,`sm`,`md`,`lg`, like `xl`,`2xl`,`3xl`, not limited to `square`, `square`, `square`, `square`, `square`, `square`.
+- You can also provide them with more sizes including but not limited to `xs`,`sm`,`md`,`lg`, like `xl`,`2xl`,`3xl`.
 
 - More shapes than `square`, `circle`.