container: c++: dfi namespace refactor

Align with project alias, save the eyes and hands.

container/src/root/test/unit/utility.hh

@@ -1,6 +1,6 @@
 // docker-finance | modern accounting for the power-user
 //
-// Copyright (C) 2021-2024 Aaron Fiore (Founder, Evergreen Crypto LLC)
+// Copyright (C) 2021-2025 Aaron Fiore (Founder, Evergreen Crypto LLC)
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -41,17 +41,17 @@
 
 #include "../common/utility.hh"
 
-//! \namespace docker_finance
+//! \namespace dfi
 //! \since docker-finance 1.0.0
-namespace docker_finance
+namespace dfi
 {
-//! \namespace docker_finance::tests
+//! \namespace dfi::tests
 //! \brief docker-finance common test framework
 //! \ingroup cpp_tests
 //! \since docker-finance 1.0.0
 namespace tests
 {
-//! \namespace docker_finance::tests::unit
+//! \namespace dfi::tests::unit
 //! \brief docker-finance unit test cases
 //! \ingroup cpp_tests
 //! \since docker-finance 1.0.0
@@ -277,7 +277,7 @@ TEST_F(ByteTransform, unordered_set)
 }
 }  // namespace unit
 }  // namespace tests
-}  // namespace docker_finance
+}  // namespace dfi
 
 #endif  // CONTAINER_SRC_ROOT_TEST_UNIT_UTILITY_HH_