Updating Errors in the API-ref Docs 

Updating Errors in the API-ref Docs 
<think>
PR Context:
- Title: docs: Added desc. for wallets other than AP, GP
- Merged: 2024-10-29T07:56:09Z
- Files changed: 3 files
- Commits: 5 commits

Implementation approach:
## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [ ] New feature
- [ ] Enhancement
- [ ] Refactoring
- [ ] Dependency updates
- [X] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->
Closes #5305 

### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR modifies application configuration/environment variables

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</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** docs: Added desc. for wallets other than AP, GP (#6452)
Co-authored-by: hyperswitch-bot[bot] <148525
Files to modify:


**crates/api_models/src/payments.rs**
  Modify existing code
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