Internal change

PiperOrigin-RevId: 805371880

Author: protobuf-github-bot

content/reference/go/opaque-migration.md

@@ -66,6 +66,7 @@ To install the migration tool, use:
 
 ```
 go install google.golang.org/open2opaque@latest
+go install golang.org/x/tools/cmd/goimports@latest
 ```
 
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