[red-knot] Format mdtest snippets with the latest version of black (#15819)

Author: AlexWaygood

.pre-commit-config.yaml

@@ -56,7 +56,7 @@ repos:
             .*?invalid(_.+)*_syntax\.md
           )$
         additional_dependencies:
-          - black==24.10.0
+          - black==25.1.0
 
   - repo: https://github.com/crate-ci/typos
     rev: v1.29.4

crates/red_knot_python_semantic/resources/mdtest/annotations/literal.md

@@ -106,7 +106,7 @@ def union_example(
         Literal["B"],
         Literal[True],
         None,
-    ]
+    ],
 ):
     reveal_type(x)  # revealed: Unknown | Literal[-1, "A", b"A", b"\x00", b"\x07", 0, 1, "B", "foo", "bar", True] | None
 ```

crates/red_knot_python_semantic/resources/mdtest/suppressions/type_ignore.md

@@ -151,7 +151,7 @@ b = a / 0
 ```py
 """
 File level suppressions must come before any non-trivia token,
-including module docstrings. 
+including module docstrings.
 """
 
 # error: [unused-ignore-comment] "Unused blanket `type: ignore` directive"

crates/red_knot_python_semantic/resources/mdtest/unpacking.md

@@ -282,7 +282,7 @@ reveal_type(b)  # revealed: Unknown
 
 ```py
 # error: [invalid-assignment] "Not enough values to unpack (expected 2, got 1)"
-(a, b) = "\u9E6C"
+(a, b) = "\u9e6c"
 
 reveal_type(a)  # revealed: LiteralString
 reveal_type(b)  # revealed: Unknown
@@ -292,7 +292,7 @@ reveal_type(b)  # revealed: Unknown
 
 ```py
 # error: [invalid-assignment] "Not enough values to unpack (expected 2, got 1)"
-(a, b) = "\U0010FFFF"
+(a, b) = "\U0010ffff"
 
 reveal_type(a)  # revealed: LiteralString
 reveal_type(b)  # revealed: Unknown
@@ -301,7 +301,7 @@ reveal_type(b)  # revealed: Unknown
 ### Surrogates
 
 ```py
-(a, b) = "\uD800\uDFFF"
+(a, b) = "\ud800\udfff"
 
 reveal_type(a)  # revealed: LiteralString
 reveal_type(b)  # revealed: LiteralString