Fix duplicate line in package_version_retrieve.md

Corrected a duplicate line in the documentation for the package version retrieve command.

Author: jshackell-sfdc

messages/package_version_retrieve.md

@@ -12,7 +12,7 @@ By default, the package version retrieve command is available to 2GP managed pac
 
 # examples
 
-Retrieve package metadata for a converted subscriber package version ID (starts with 04t) into my-directory/ within your Salesforce DX project directory:
+- Retrieve package metadata for a converted subscriber package version ID (starts with 04t) into my-directory/ within your Salesforce DX project directory:
 
   <%= config.bin %> <%= command.id %> --package 04tXXX --output-dir my-directory/ --target-dev-hub devhub@example.com