fix(python): Fix new_scope example (#14394)

The example for `new_scope` didn't actually use `new_scope`.

Author: sentrivana

docs/platforms/python/enriching-events/scopes/index.mdx

@@ -27,17 +27,13 @@ However, if your use case requires direct access to the scope object, you can us
 
 <Alert>
 
-Avoid calling top-level APIs inside the  <PlatformIdentifier name="new-scope" /> context manager. The top-level API might interact with a different scope from what <PlatformIdentifier name="new-scope" /> yields, causing unintended results. While within the <PlatformIdentifier name="new-scope" /> context manager, please call methods directly on the scope that <PlatformIdentifier name="new-scope" /> yields!
+Avoid calling top-level APIs inside the <PlatformIdentifier name="new-scope" /> context manager. The top-level API might interact with a different scope from what <PlatformIdentifier name="new-scope" /> yields, causing unintended results. While within the <PlatformIdentifier name="new-scope" /> context manager, please call methods directly on the scope that <PlatformIdentifier name="new-scope" /> yields!
 
 </Alert>
 
-Using <PlatformIdentifier name="new-scope" /> allows you to attach additional information, such as adding custom tags or informing Sentry about the currently authenticated user.
+Using <PlatformIdentifier name="new-scope" /> allows you to attach additional information, such as adding custom tags.
 
 <PlatformContent includePath="enriching-events/scopes/configure-scope" />
 
-You can also apply this configuration when unsetting a user at logout:
-
-<PlatformContent includePath="enriching-events/unset-user" />
-
 To learn what useful information can be associated with scopes see
 [the context documentation](../context/).

platform-includes/enriching-events/scopes/configure-scope/python.mdx

@@ -1,15 +1,21 @@
 ```python
 import sentry_sdk
 
-scope = sentry_sdk.get_current_scope()
-scope.set_tag("my-tag", "my value")
-scope.user = {"id": 42, "email": "[email protected]"}
+sentry_sdk.init(...)
 
-# reset all scope data
-scope.clear()
+with sentry_sdk.new_scope() as scope:
+    scope.set_tag("inside-new-scope", "yes")
+    try:
+        raise RuntimeError("With new_scope")
+    except:
+        # This exception will have the tag set
+        sentry_sdk.capture_exception()
 
-# Or:
-
-sentry_sdk.set_tag("my-tag", "my value")
-sentry_sdk.set_user({"id": 42, "email": "[email protected]"})
+# The scope is automatically cleared and the previous scope
+# is restored after the `with` block
+try:
+    raise RuntimeError("Outside of new_scope")
+except:
+    # This exception won't have the custom tag set
+    sentry_sdk.capture_exception()
 ```