Update documentation.

- Convert http to https, provide archive link when possible.
- Made CPU-JIT.png more readable on dark themes;
Added a white background so there isn't black text on a black
background.

src/xenia/kernel/xboxkrnl/xboxkrnl_memory.cc

@@ -496,7 +496,7 @@ dword_result_t MmQueryStatistics(
 }
 DECLARE_XBOXKRNL_EXPORT1(MmQueryStatistics, kMemory, kImplemented);
 
-// http://msdn.microsoft.com/en-us/library/windows/hardware/ff554547(v=vs.85).aspx
+// https://msdn.microsoft.com/en-us/library/windows/hardware/ff554547(v=vs.85).aspx
 dword_result_t MmGetPhysicalAddress(dword_t base_address) {
   // PHYSICAL_ADDRESS MmGetPhysicalAddress(
   //   _In_  PVOID BaseAddress