* fix link in README.md

Signed-off-by: Pravek Sharma <sharmapravek@gmail.com>

* simplify linux and mac link in README.md

Signed-off-by: Pravek Sharma <sharmapravek@gmail.com>

* update Doxyfile

Signed-off-by: Pravek Sharma <sharmapravek@gmail.com>

* update CI to use /scripts/run_doxygen.sh

Signed-off-by: Pravek Sharma <sharmapravek@gmail.com>

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Signed-off-by: Pravek Sharma <sharmapravek@gmail.com>