better spinner msg

Author: gaojude

packages/next/src/build/after-production-compile.ts

@@ -36,7 +36,9 @@ export async function runAfterProductionCompile({
       },
     },
   ])
-  const afterBuildSpinner = createSpinner('Running runAfterProductionCompile')
+  const afterBuildSpinner = createSpinner(
+    'Running next.config.js provided runAfterProductionCompile'
+  )
 
   try {
     const startTime = performance.now()