chore: Add documentation for main export

Should fix the jsr score.

src/lib.ts

@@ -4,9 +4,17 @@ import { Base16Config } from './Base16Config.ts'
 import type { Base16Options } from './Base16Options.ts'
 import { Base16Plugin } from './Base16Plugin.ts'
 
+/** Usage:
+ *
+ * ```ts
+ * import { base16Tailwind } from '@donovanglover/base16-tailwind'
+ * ```
+ *
+ * @param options The options to customize base16-tailwind with.
+ */
 export const base16Tailwind: {
   (options?: Base16Options): {
-    handler: PluginCreator,
+    handler: PluginCreator
     config?: Partial<Config>
   }