formatting fixes

rich/live_render.py

@@ -88,4 +88,4 @@ class LiveRender:
         for last, line in loop_last(lines):
             yield from line
             if not last:
-                yield _Segment.line()
+                yield _Segment.line()

tests/test_layout.py

@@ -47,4 +47,4 @@ def test_tree():
     print(repr(result))
     expected = "'root' (ratio=1)                                            \n├── (size=2)                                                \n└── (ratio=1)                                               \n"
 
-    assert result == expected
+    assert result == expected

tests/test_screen.py

@@ -9,4 +9,4 @@ def test_screen():
     result = capture.get()
     print(repr(result))
     expected = "foo                 \nbar                 \nbaz                 \nfoo                 \nbar                 "
-    assert result == expected
+    assert result == expected