`cf.tls_ciphers_sha1` in Ruleset Engine Fields reference should be `cf.tls_cilent_ciphers_sha1` instead

### Existing documentation URL(s)

- https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/cf.tls_ciphers_sha1/
- https://developers.cloudflare.com/ruleset-engine/rules-language/fields/reference/

### What changes are you suggesting?

The correct field name is documented in [Available fields and functions](https://developers.cloudflare.com/rules/transform/url-rewrite/reference/fields-functions/) for URL Rewrite Rules, which is working as expected.
Some other fields mentioned here are also absent in the Fields reference; it would be nice if [src/content/fields/index.yaml](https://github.com/cloudflare/cloudflare-docs/blob/production/src/content/fields/index.yaml) could be updated systematically to work as the canonical fields reference.

### Additional information

_No response_