docs: update invalid userspace communication struct types

README.md

@@ -29,7 +29,7 @@ The client programs that aggregate the desired system data may send them to the
 This is done via a simple packet, `daemon_measurement_t` which is defined in [`common/include/protocol.h`](common/include/protocol.h):
 ```c
 #define MAX_DAEMON_PACKET_SIZE PIPE_BUF
-#define DAEMON_PACKET_HEADER_SIZE sizeof(u_int8_t) + sizeof(u_int16_t)
+#define DAEMON_PACKET_HEADER_SIZE sizeof(uint8_t) + sizeof(uint16_t)
 #define MAX_DAEMON_PACKET_DATA_SIZE MAX_DAEMON_PACKET_SIZE - DAEMON_PACKET_HEADER_SIZE
 
 typedef struct {