[Feature] Missing documentation details

[qifengdao]

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• I searched in the issues and found nothing similar.

Motivation

https://paimon.apache.org/docs/1.4/concepts/spec/fileindex/ .
Index: The data types supported by the Bloom Filter index are not explicitly specified. For instance, currently only the following are supported:

• Char / VarChar — xx hash
• Binary / VarBinary — xx hash
• TinyInt / SmallInt / Int / BigInt — Thomas Wang hash
• Float / Double — Thomas Wang hash（on bit representation）
• Date / Time / Timestamp / LocalZonedTimestamp — Thomas Wang hash

Solution

No response

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!