fix: fix some typos

add a config file for `typos` tool https://github.com/crate-ci/typos?tab=readme-ov-file

we could consider adding this to CI/pre-commit but don't want to do a big repo-wide change right now

hugr-py/src/hugr/hugr.py

@@ -241,11 +241,11 @@ def incoming_links(self, node: ToNode) -> Iterable[tuple[InPort, list[OutPort]]]
         return self._node_links(node, self._links.bck)
 
     def num_incoming(self, node: Node) -> int:
-        # connecetd links
+        # connected links
         return sum(1 for _ in self.incoming_links(node))
 
     def num_outgoing(self, node: ToNode) -> int:
-        # connecetd links
+        # connected links
         return sum(1 for _ in self.outgoing_links(node))
 
     # TODO: num_links and _linked_ports

hugr-py/src/hugr/serialization/ops.py

@@ -369,7 +369,7 @@ def deserialize(self) -> ops.LoadFunc:
         (f_ty,) = signature.output
         assert isinstance(
             f_ty, tys.FunctionType
-        ), "Expected single funciton type output"
+        ), "Expected single function type output"
         return ops.LoadFunc(
             self.func_sig.deserialize(),
             f_ty,