fix: cargo fmt, add .gitleaks.toml allowlist for doc examples

- remove extra blank lines in openapi.rs and secrets/mod.rs
- allowlist commit 92155cf (curl -u admin:yourpassword in README)

nora-registry/src/secrets/mod.rs

@@ -1,7 +1,6 @@
 // Copyright (c) 2026 Volkov Pavel | DevITWay
 // SPDX-License-Identifier: MIT
 
-
 //! Secrets management for NORA
 //!
 //! Provides a trait-based architecture for secrets providers: