docs: add v10 into the tech-spec page

### Feature Description

**What the feature achieves:**
add doc spec around table v10 and native log format(log format v2)

**Why this feature is needed:**
clarify the tech details.

### User Experience

**How users will use this feature:**
No configurations.

- Configuration changes needed
- API changes
- Usage examples

### Hudi RFC Requirements

**RFC PR link:** (if applicable)
rfc-103

**Why RFC is/isn't needed:**
- Does this change public interfaces/APIs? (Yes/No)
- Does this change storage format? (Yes/No)
- Justification: