docs(configuration): update stats.colors type (#7206)

Author: snitin315

src/content/configuration/stats.mdx

@@ -327,7 +327,7 @@ module.exports = {
 
 ### stats.colors
 
-`boolean = false` `object`
+`boolean = false` `{ bold?: string, cyan?: string, green?: string, magenta?: string, red?: string, yellow?: string }`
 
 Tells `stats` whether to output in the different colors.