fixup

Author: nsajko

src/GraphProperties.jl

@@ -154,8 +154,8 @@ let
         (:GraphIsTree, "a *tree*", [], ug),
         (:GraphIsPseudoforest, "a *pseudoforest*", [], ug),
         (:GraphisPseudotree, "a *pseudotree*", [], ug),
-        (:GraphIsPolyforest, "a *polyforest*", ["a *directed forest*", "an *oriented forest*"], dg),
-        (:GraphIsPolytree, "a *polytree*", ["a *directed tree*", "an *oriented tree*"], dg),
+        (:DigraphIsPolyforest, "a *polyforest*", ["a *directed forest*", "an *oriented forest*"], dg),
+        (:DigraphIsPolytree, "a *polytree*", ["a *directed tree*", "an *oriented tree*"], dg),
         (:DigraphIsOutTree, "an *out-tree*", ["an *arborescence*", "a *directed rooted tree*"], dg),
         (:DigraphIsInTree, "an *in-tree*", ["an *anti-arborescence*"], dg),
         (:DigraphIsOutForest, "an *out-forest*", ["a *branching*"], dg),