change readme

README.md

@@ -15,7 +15,7 @@ Since this library is basically a 1:1 wrapper of CZMQ, please refer to the [CZMQ
 ```zig
 const zzmq = @import("zzmq");
 
-var s = try zzmq.ZSocket.init(allocator, zzmq.ZSocketType.Pair);
+var s = try zzmq.zsocket.ZSocket.init(allocator, zzmq.zsocket.ZSocketType.Pair);
 defer s.deinit();
 
 const port = try s.bind("tcp://127.0.0.1:!");
@@ -59,7 +59,7 @@ exe.linkLibC();
 
 ### Installing local dependencies
 
-Installing [CZMQ](http://czmq.zeromq.org) development library version 4.2 or higher is also required:
+Installing [CZMQ](http://czmq.zeromq.org) development library version 4.0 or higher is also required:
 
 ```sh
 # Building on Ubuntu, PoP_OS, ZorinOS, etc.