Document the new "=NAME" (#95) and "@FILE" (#12) syntax for --watchfd options.

src/main/options.c

@@ -157,7 +157,6 @@ static bool opts_watchfd_add_item(opts_t opts, pid_t pid, int fd)
  */
 static bool opts_watchfd_processname(opts_t opts, const char *process_name)
 {
-	/* TODO: document "-d =NAME" syntax */
 	/* TODO: read from pgrep, without using popen() or system() */
 	return false;
 }
@@ -173,8 +172,6 @@ static bool opts_watchfd_listfile(opts_t opts, const char *filename)
 	char buffer[1024];		 /* flawfinder: ignore */
 	unsigned int linenumber;
 
-	/* TODO: document "-d @FILE" syntax */
-
 	/*
 	 * flawfinder: buffer is zeroed before each use, and fgets() is
 	 * passed one less than its size so the string functions in the loop