docs(config): omit invalid detailed option in stats.md (#1757)

Author: Teffen Ellis (Eric)

src/content/configuration/stats.md

@@ -31,7 +31,6 @@ stats: "errors-only"
 | `"minimal"`     | *none*  | Only output when errors or new compilation happen |
 | `"none"`        | `false` | Output nothing |
 | `"normal"`      | `true`  | Standard output |
-| `"detailed"`    | *none*  | Detailed output (since webpack 3.0.0) |
 | `"verbose"`     | *none*  | Output everything |
 
 For more granular control, it is possible to specify exactly what information you want. Please note that all of the options in this object are optional.