Only output error message when file exists (#23155)

Close https://github.com/github/docs-engineering/issues/1276

Author: mjacobus

script/i18n/fix-translation-errors.js

@@ -33,7 +33,9 @@ async function main() {
     try {
       fileContents = await readFileAsync(path, 'utf8')
     } catch (e) {
-      console.error(e.message)
+      if (fs.existsSync(path)) {
+        console.error(e.message)
+      }
       return null
     }