Fix arity of try/1 in :elixir_import.special_form (#8079)

Fixes #8078

Signed-off-by: José Valim <[email protected]>

Author: fertapric

lib/elixir/src/elixir_import.erl

@@ -239,6 +239,6 @@ special_form('for', _) -> true;
 special_form('with', _) -> true;
 special_form('cond', 1) -> true;
 special_form('case', 2) -> true;
-special_form('try', 2) -> true;
+special_form('try', 1) -> true;
 special_form('receive', 1) -> true;
 special_form(_, _) -> false.