[Sync EN] hash: Fix changelog to mention E_WARNING (#5271)

Commit: `https://github.com/php/doc-en/commit/df2a77acbbb9d381426b863fcfa4d66ac7f5ab6d`
PR: `https://github.com/php/doc-en/pull/5271`

**Fichiers FR à mettre à jour**
- `reference/hash/functions/hash-hmac-file.xml`
- `reference/hash/functions/hash-hmac.xml`
- `reference/hash/functions/hash.xml`

