Update metadata for literal-or-new-object-identity

src/core_codemods/docs/pixee_python_literal-or-new-object-identity.md

@@ -1,4 +1,4 @@
-The `is` and `is not` operator will only return `True` when the expression have the same `id`. In other words, `a is b` is equivalent to `id(a) == id(b)`. New objects and literals have their own identities and thus shouldn't be compared with using the `is` or `is not` operators.
+The `is` and `is not` operators only evaluate to `True` when the expressions on each side have the same `id`. In other words, `a is b` is equivalent to `id(a) == id(b)`. With few exceptions, objects and literals have unique identities and thus shouldn't generally be compared by using the `is` or `is not` operators.
 
 Our changes look something like this:
 

src/core_codemods/literal_or_new_object_identity.py

@@ -16,8 +16,7 @@
 class LiteralOrNewObjectIdentityTransformer(
     LibcstResultTransformer, NameAndAncestorResolutionMixin
 ):
-
-    change_description = "Replaces is operator with =="
+    change_description = "Replace `is` operator with `==`"
 
     def _is_object_creation_or_literal(self, node: cst.BaseExpression):
         match node:
@@ -80,7 +79,7 @@ def leave_Comparison(
 LiteralOrNewObjectIdentity = CoreCodemod(
     metadata=Metadata(
         name="literal-or-new-object-identity",
-        summary="Replaces is operator with == for literal or new object comparisons",
+        summary="Replace `is` with `==` for literal or new object comparisons",
         review_guidance=ReviewGuidance.MERGE_WITHOUT_REVIEW,
         references=[
             Reference(