### Description
Two README files in \`crates/\` had typos and one had an ambiguous file
reference:
**\`crates/warpui_core/README.md\`**
- \"to do describe\" → \"To describe\"
- \"appearence\" → \"appearance\"
- \"precicely\" → \"precisely\"
- \"handlign\" → \"handling\"
**\`crates/lsp/README.md\`**
- \"implmentation\" → \"implementation\"
- The README said \"See main.rs for an example implementation\" but
there is no \`main.rs\` in \`crates/lsp/src/\`. The example actually
lives at \`crates/lsp/examples/rust-lsp/main.rs\`, so I made the path
explicit.
Doc-only changes.
### Testing
Markdown only.
### Server API
No server changes.
### Agent Mode
Not applicable.
### Changelog Entries
None.
Co-authored-by: anshul-garg27 <anshul-garg27@users.noreply.github.com>
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