fix: fix main script path

This fixes a bug that prevented the plugin from being imported during a build. The path to the main script was incorrect, so builds were failing.

Closes #31

Author: jonahsnider

package.json

@@ -26,7 +26,7 @@
 		"nextjs"
 	],
 	"license": "Apache-2.0",
-	"main": "./tsc_output/src/index.js",
+	"main": "./tsc_output/index.js",
 	"name": "netlify-plugin-cache-nextjs",
 	"repository": {
 		"type": "git",