refactor(kernel): minor refactor. Changed naming convention

Kernel/Source/Arch/Exceptions.c

@@ -1,6 +1,6 @@
 #include <Arch/Exceptions.h>
 #include <Arch/CPU.h>
-#include <IO/IOSerial.h>
+#include <IO/Serial.h>
 
 void ExceptionsHandler(ExceptionsContext* context, ExceptionsType type) {
     IOSerialPutString("Exception occurred");

Kernel/Source/IO/Serial.c

@@ -1,4 +1,4 @@
-#include <IO/IOSerial.h>
+#include <IO/Serial.h>
 #include <Arch/IO.h>
 #include <Arch/CPU.h>
 

Kernel/Source/KernelMain.c

@@ -1,5 +1,5 @@
 #include <types.h>
-#include <IO/IOSerial.h>
+#include <IO/Serial.h>
 
 void KernelMain(void) {
     IOSerialPutString("Meow nya!!\n");