Parquet-cli convert-csv : Unknown --format option in example

In the following example :

"# Create an Avro file from CSV data in S3",
"s3:/data/path/sample.csv -o sample.avro --format avro --schema s3:/schemas/schema.avsc"

the option --format doesn't exist (or doesn't exist anymore)

It seems it has been replaced by the to-avro command of parquet-cli

So, example could simply be :
"# Create a parquet file from CSV data in S3",
"s3:/data/path/sample.csv -o sample.parquet --schema s3:/schemas/schema.avsc"

Best regards,

Christophe

**Reporter**: [Christophe SEBILLE](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=csebille) / @csebille

_{**Note**: *This issue was originally created as [PARQUET-1131](https://issues.apache.org/jira/browse/PARQUET-1131). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*}

受影响的入口点是 issue 中展示的 parquet-cli 转换示例；首先在仓库中找到该示例，并确认 --format 和 to-avro 支持的命令语法。完成的标准是示例使用现有命令，并且其输出文件名与格式描述一致。

由索引模型根据 Issue 内容生成。