docs: Update README.md

Stranger6667 · Sep 18, 2024 · f3a255b · f3a255b
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Showing 1 changed file with 1 addition and 1 deletion.
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@@ -45,7 +45,7 @@ $ jsonschema-cli schema.json -i instance.json
 
 See more usage examples in the [documentation](https://docs.rs/jsonschema).
 
-**Note:** If you're upgrading from a version prior to 0.20.0, please refer to our [Migration Guide](MIGRATION.md) for important changes and deprecations.
+> ⚠️ **Upgrading from pre-0.20.0?** Check our [Migration Guide](MIGRATION.md) for key changes.
 
 ## Highlights