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/gpu/command_processor.cc

@@ -347,8 +347,8 @@ void CommandProcessor::MakeCoherent() {
   // some way to check for dest coherency (what all the COHER_DEST_BASE_*
   // registers are for).
   // Best docs I've found on this are here:
-  // http://amd-dev.wpengine.netdna-cdn.com/wordpress/media/2013/10/R6xx_R7xx_3D.pdf
-  // http://cgit.freedesktop.org/xorg/driver/xf86-video-radeonhd/tree/src/r6xx_accel.c?id=3f8b6eccd9dba116cc4801e7f80ce21a879c67d2#n454
+  // https://web.archive.org/web/20160711162346/https://amd-dev.wpengine.netdna-cdn.com/wordpress/media/2013/10/R6xx_R7xx_3D.pdf
+  // https://cgit.freedesktop.org/xorg/driver/xf86-video-radeonhd/tree/src/r6xx_accel.c?id=3f8b6eccd9dba116cc4801e7f80ce21a879c67d2#n454
 
   RegisterFile* regs = register_file_;
   auto status_host = regs->values[XE_GPU_REG_COHER_STATUS_HOST].u32;
@@ -1392,7 +1392,7 @@ bool CommandProcessor::ExecutePacketType3_VIZ_QUERY(RingBuffer* reader,
                                                     uint32_t packet,
                                                     uint32_t count) {
   // begin/end initiator for viz query extent processing
-  // http://www.google.com/patents/US20050195186
+  // https://www.google.com/patents/US20050195186
   assert_true(count == 1);
 
   uint32_t dword0 = reader->ReadAndSwap<uint32_t>();