Corrects a typo in the variable name used for tracking quote positions
in vim text object operations.
## Description
Fixes a typo: `quote_ahead_fount_at` → `quote_ahead_found_at` in
`crates/vim/src/text_objects/quote.rs`.
## Testing
- [x] No functional changes, purely a variable rename
- [x] Code compiles successfully
No new tests added as this is a simple variable rename with no
behavioral changes.
## Server API dependencies
- [x] N/A
## Agent Mode
- [ ] Warp Agent Mode
## Changelog Entries for Stable
N/A - Minor typo fix.
Co-authored-by: Aloke Desai <aloke.desai@gmail.com>
