The --api-versions flag was undocumented in the template command's
help text. This adds usage documentation and examples showing both
comma-separated and multiple flag usage patterns.
Fixes#13198
Signed-off-by: majiayu000 <1835304752@qq.com>
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Signed-off-by: majiayu000 <1835304752@qq.com>