message: Update doc readme
diff: # 3D Time of Flight : doc
  #### Overview
  -This folder contains the user guides, helper documents, doxygen documents, etc for the 3D ToF SDK and Examples
  +This folder contains the user guides, helper documents, doxygen documents, etc. for the 3D ToF SDK and examples.
  #### Directory Structure
  | Directory/File | Description |
  | --------- | ----------- |
  +| dragonboard410c | Instructions to build and use all necessary software on Dragonboard 410c |
  +| linux | Instructions to build and use all necessary software on a Linux host |
  +| windows | Instructions to build and use all necessary software on a Windows host |
  +| img | Images used in various documentation files |
  | CMakeLists.txt | Rules for generating the doxygen documentation on request |
  -| linux_build.md | Contains the steps for building the SDK on Linux host |
  -| windows_build.md | Contains the steps for building the SDK on Windows host |
  -| macos_build.md | Contains the steps for building the SDK on Windows host |
  -
  -
  +| sdcard_burn.md | Instructions to write the SD card image onto a SD card |
  +| sdk.doxy.in | The doxygen configuration before cmake content gets added |
  