docs(guide/config): fix typo (#1344)

Author: klren0312

docs/guide/configuration.md

@@ -100,7 +100,7 @@ module.exports = {
     electronBuilder: {
       // option: default // description
       disableMainProcessTypescript: false, // Manually disable typescript plugin for main process. Enable if you want to use regular js for the main process (src/background.js by default).
-      mainProcessTypeChecking: false // Manually enable type checking during webpck bundling for background file.
+      mainProcessTypeChecking: false // Manually enable type checking during webpack bundling for background file.
     }
   }
 }