docs: yaml: dyn-array-ft-obj.adoc: fix wrong static array FT copy
docs: yaml: dyn-array-ft-obj.adoc: fix wrong static array FT copy

Reported-by: Simon Marchi <fa7054fed17d58b06d3b1bf9b1077e42165a09ec@efficios.com>
Signed-off-by: Philippe Proulx <2096628897b40c93960fdd9e24c9c883a54d4fe9@gmail.com>

efficios/barectf,efficios/barectf