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/HashFunction.h

@@ -10,8 +10,7 @@
 #include <AK/StringView.h>
 #include <AK/Types.h>
 
-namespace Crypto {
-namespace Hash {
+namespace Crypto::Hash {
 
 template<size_t DigestS>
 struct Digest {
@@ -59,4 +58,3 @@ protected:
     virtual ~HashFunction() = default;
 };
 }
-}