This isn't so complicated that it needs this much annotation.  Just leave it at
````
portTICK_RATE_MS is in [ms/tick]
````
There's no reason for the code to be filled with proofs of correctness in the margins.

Anyone who wants to second guess the implementation can just look in portmacro.h and satisfy themselves.  No internet required.
````
#define portTICK_RATE_MS  ( ( portTickType ) 1000 / configTICK_RATE_HZ )
````
(ms/s) / (ticks/s) = (ms/s) * (s/tick) = ms/tick

All of the annotation at the end of each line of code is just clutter for those trying to read the code.  If you insist on keeping the annotations, at least move them above the actual code rather than on the same lines.