[sv-bc] minor text issue in extern module desc

There is:
"An extern module declaration consists of the keyword extern followed by
the module name and the list of ports for the module."
it suggest that it is ok to write:
extern module_name(bit clk);

It should be changed:
"An extern module declaration consists of the keyword extern followed
module keyword and then by the module name and the list of ports for the
module."

or smth similar if interface and programs are allowed

DANiel

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