Spec matches actual function

INFO:  Regenerating edocs for triq
./src/triq_dom.erl, function atom/0: at line 797: @spec name does not match.
edoc: skipping source file './src/triq_dom.erl': {'EXIT',error}

Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>
diff --git a/src/triq_dom.erl b/src/triq_dom.erl
index 59e6195..1dec379 100644
--- a/src/triq_dom.erl
+++ b/src/triq_dom.erl
@@ -794,7 +794,7 @@
     end.
 
 %% @doc The domain of atoms
-%% @spec int() -> domain(integer())
+%% @spec atom() -> domain(integer())
 -spec atom() -> domrec(atom()).
 atom() ->
     #?DOM{kind=#atom{size=any},