fixup comment

Author: jsjoeio

ci/build/release-prep.sh

@@ -5,7 +5,7 @@
 # 2. Update the version of code-server (package.json, docs, etc.)
 # 3. Update the code coverage badge in the README
 # 4. Open a draft PR using the release_template.md and view in browser
-# If you want to perform a dry run of this script run DRY_RUN=0 yarn release:prep
+# If you want to perform a dry run of this script run DRY_RUN=1 yarn release:prep
 
 set -euo pipefail