Apply suggestions from code review

Author: jfy133

docs/usage.md

@@ -574,7 +574,9 @@ Then, download the database:
 run_dbcan database --db_dir <path/to/your/db>
 ```
 
-Replace `<path/to/your/db>` with your preferred directory path for storing the database files. Once the database download is complete, the file are ready for use with the `run_dbcan` tool without additional configurations or modifications.
+Replace `<path/to/your/db>` with your preferred directory path for storing the database files.
+Once the database download is complete, the file are ready for use with the `run_dbcan` tool without additional configurations or modifications.
+Supply the parameter `--cazyme_dbcan_db <path/to/your/db>` to use the downloaded database with nf-core/funcscan.
 
 ## Updating the pipeline