ecrt_master_request() should be changed to ecrt_request_master() in two documentation files: documenation/ethercat_doc.txt and documenation/ethercat_doc_fr.txt
It's a small typo but causes me confused when reading your documentation.
Because the function name of ecrt_master_request() is already changed ecrt_request_master() in codes, it's better to also change all of it in documentation. Some places are alreay changed but one place still need to be changed:
\lstinline+ecrt_master_request()+ function of the application interface (see
to
\lstinline+ecrt_request_master()+ function of the application interface (see