Use double-quotes instead template literals (#4286)

Just for consistency 🙏

Author: jeniabrook

tailwind.config.cjs

@@ -49,9 +49,9 @@ module.exports = {
         },
       },
       borderRadius: {
-        xl: `calc(var(--radius) + 4px)`,
-        lg: `var(--radius)`,
-        md: `calc(var(--radius) - 2px)`,
+        xl: "calc(var(--radius) + 4px)",
+        lg: "var(--radius)",
+        md: "calc(var(--radius) - 2px)",
         sm: "calc(var(--radius) - 4px)",
       },
       fontFamily: {