[red-knot] Format mdtest Python snippets more concisely (#13905)

crates/red_knot_python_semantic/resources/mdtest/subscript/bytes.md

@@ -28,7 +28,6 @@ reveal_type(y)  # revealed: Unknown
 ```py
 def int_instance() -> int: ...
 
-
 a = b"abcde"[int_instance()]
 # TODO: Support overloads... Should be `bytes`
 reveal_type(a)  # revealed: @Todo

crates/red_knot_python_semantic/resources/mdtest/subscript/class.md

@@ -5,7 +5,6 @@
 ```py
 class NotSubscriptable: ...
 
-
 a = NotSubscriptable[0]  # error: "Cannot subscript object of type `Literal[NotSubscriptable]` with no `__class_getitem__` method"
 ```
 
@@ -16,7 +15,6 @@ class Identity:
     def __class_getitem__(cls, item: int) -> str:
         return item
 
-
 reveal_type(Identity[0])  # revealed: str
 ```
 
@@ -25,19 +23,16 @@ reveal_type(Identity[0])  # revealed: str
 ```py
 flag = True
 
-
 class UnionClassGetItem:
     if flag:
 
         def __class_getitem__(cls, item: int) -> str:
             return item
-
     else:
 
         def __class_getitem__(cls, item: int) -> int:
             return item
 
-
 reveal_type(UnionClassGetItem[0])  # revealed: str | int
 ```
 
@@ -46,17 +41,14 @@ reveal_type(UnionClassGetItem[0])  # revealed: str | int
 ```py
 flag = True
 
-
 class A:
     def __class_getitem__(cls, item: int) -> str:
         return item
 
-
 class B:
     def __class_getitem__(cls, item: int) -> int:
         return item
 
-
 x = A if flag else B
 
 reveal_type(x)  # revealed: Literal[A, B]
@@ -69,16 +61,13 @@ reveal_type(x[0])  # revealed: str | int
 flag = True
 
 if flag:
-
     class Spam:
         def __class_getitem__(self, x: int) -> str:
             return "foo"
 
 else:
-
     class Spam: ...
 
-
 # error: [call-non-callable] "Method `__class_getitem__` of type `Literal[__class_getitem__] | Unbound` is not callable on object of type `Literal[Spam, Spam]`"
 # revealed: str | Unknown
 reveal_type(Spam[42])
@@ -90,7 +79,6 @@ reveal_type(Spam[42])
 flag = True
 
 if flag:
-
     class Eggs:
         def __class_getitem__(self, x: int) -> str:
             return "foo"

crates/red_knot_python_semantic/resources/mdtest/subscript/instance.md

@@ -5,7 +5,6 @@
 ```py
 class NotSubscriptable: ...
 
-
 a = NotSubscriptable()[0]  # error: "Cannot subscript object of type `NotSubscriptable` with no `__getitem__` method"
 ```
 
@@ -15,7 +14,6 @@ a = NotSubscriptable()[0]  # error: "Cannot subscript object of type `NotSubscri
 class NotSubscriptable:
     __getitem__ = None
 
-
 a = NotSubscriptable()[0]  # error: "Method `__getitem__` of type `None` is not callable on object of type `NotSubscriptable`"
 ```
 
@@ -26,7 +24,6 @@ class Identity:
     def __getitem__(self, index: int) -> int:
         return index
 
-
 reveal_type(Identity()[0])  # revealed: int
 ```
 
@@ -35,18 +32,15 @@ reveal_type(Identity()[0])  # revealed: int
 ```py
 flag = True
 
-
 class Identity:
     if flag:
 
         def __getitem__(self, index: int) -> int:
             return index
-
     else:
 
         def __getitem__(self, index: int) -> str:
             return str(index)
 
-
 reveal_type(Identity()[0])  # revealed: int | str
 ```

crates/red_knot_python_semantic/resources/mdtest/subscript/string.md

@@ -25,7 +25,6 @@ reveal_type(b)  # revealed: Unknown
 ```py
 def int_instance() -> int: ...
 
-
 a = "abcde"[int_instance()]
 # TODO: Support overloads... Should be `str`
 reveal_type(a)  # revealed: @Todo