Add missing inline config for "Error codes for optional checks" snippets

Author: joaopalmeiro

docs/source/error_code_list2.rst

@@ -381,6 +381,8 @@ Example:
 
 .. code-block:: python
 
+    # mypy: enable-error-code="truthy-iterable"
+
     from collections.abc import Iterable
 
     def transform(items: Iterable[int]) -> list[int]:
@@ -457,6 +459,8 @@ silence the error:
 
 .. code-block:: python
 
+    # mypy: enable-error-code="unused-awaitable"
+
     async def g() -> None:
         _ = asyncio.create_task(f())  # No error
 
@@ -475,7 +479,7 @@ Example:
 
 .. code-block:: python
 
-    # Use "mypy --warn-unused-ignores ..."
+    # mypy: warn-unused-ignores
 
     def add(a: int, b: int) -> int:
         # Error: unused "type: ignore" comment
@@ -490,7 +494,7 @@ Example:
 
 .. code-block:: python
 
-    # Use "mypy --warn-unused-ignores ..."
+    # mypy: warn-unused-ignores
 
     import sys
 
@@ -557,6 +561,8 @@ flagged when this error code is enabled:
 
 .. code-block:: python
 
+    # mypy: enable-error-code="mutable-override"
+
     from typing import Any
 
     class C:
@@ -650,6 +656,8 @@ Example:
 
 .. code-block:: python
 
+        # mypy: enable-error-code="exhaustive-match"
+
         import enum
 
 
@@ -690,6 +698,8 @@ Example:
 
 .. code-block:: python
 
+        # mypy: disallow-untyped-decorators
+
         def printing_decorator(func):
             def wrapper(*args, **kwds):
                 print("Calling", func)