LibCrypto: Use nested namespace specifiers in Hash/

Author: https://github.com/nico
Commit: 1fe3ba17c0
Pull-request: https://github.com/SerenityOS/serenity/pull/16823
Reviewed-by: https://github.com/MacDue

Userland/Libraries/LibCrypto/Hash/SHA1.cpp

@@ -9,8 +9,7 @@
 #include <AK/Types.h>
 #include <LibCrypto/Hash/SHA1.h>
 
-namespace Crypto {
-namespace Hash {
+namespace Crypto::Hash {
 
 static constexpr auto ROTATE_LEFT(u32 value, size_t bits)
 {
@@ -147,4 +146,3 @@ SHA1::DigestType SHA1::peek()
 }
 
 }
-}