make name more consistent

theories/fin_map_dom.v

@@ -177,7 +177,7 @@ Qed.
 Lemma size_dom `{!Elements K D, !FinSet K D} {A} (m : M A) :
   size (dom D m) = size m.
 Proof.
-  rewrite dom_alt, list_to_set_size.
+  rewrite dom_alt, size_list_to_set.
   2:{ apply NoDup_fst_map_to_list. }
   unfold size, map_size. rewrite fmap_length. done.
 Qed.

theories/fin_sets.v

@@ -203,7 +203,7 @@ Proof.
   by apply size_non_empty_iff, non_empty_difference.
 Qed.
 
-Lemma list_to_set_size l :
+Lemma size_list_to_set l :
   NoDup l → size (list_to_set (C:=C) l) = length l.
 Proof.
   intros Hl. unfold size, set_size. simpl.