update prompt to use cn.ts

Author: sestinj

.continue/rules/migrate-styled-components-to-tailwind.md

@@ -2,4 +2,4 @@
 alwaysApply: false
 ---
 
-Convert all of the styled components in this file into tailwind CSS. If a variable is used that is not already in @theme.ts and @tailwind.config.cjs, then you should figure out where it comes from and try adding that so it can be used. Wherever a function is called to interpolate a value, you can just use inline `styles={{ ... }}`
+Convert all of the styled components in this file into tailwind CSS. If a variable is used that is not already in @theme.ts and @tailwind.config.cjs, then you should figure out where it comes from and try adding that so it can be used. Wherever a function is called to interpolate a value, you can just use inline `styles={{ ... }}`. For ternaries, you could use @cn.ts.