slight rephrasing on 1.7 migration guide for clarity (#4279)

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website/docs/guides/migration/versions/00-upgrading-to-v1.7.md

@@ -28,7 +28,7 @@ This is a relatively small behavior change, but worth calling out in case you no
 
 ## New and changed features and functionality
 
-- [`dbt docs generate`](/reference/commands/cmd-docs) now supports `--select` to generate documentation for a subset of your project. Currently available for Snowflake and Postgres only, but other adapters are coming soon. 
+- [`dbt docs generate`](/reference/commands/cmd-docs) now supports `--select` to generate [catalog metadata](/reference/artifacts/catalog-json) for a subset of your project. Currently available for Snowflake and Postgres only, but other adapters are coming soon. 
 - [Source freshness](/docs/deploy/source-freshness) can now be generated from warehouse metadata tables, currently Snowflake only, but other adapters that have metadata tables are coming soon. 
 
 ### MetricFlow enhancements