[clang] [Clang] Fix typo in is_replaceable diagnostic (PR #144247)

[Ross Kirsling via cfe-commits]

https://github.com/rkirsling created https://github.com/llvm/llvm-project/pull/144247

Adjustment to #143265; `because it not` should be `because it is not`.

>From 9bd2d17ddcbcdfaf4236ce4e4eadf0f5724a478e Mon Sep 17 00:00:00 2001
From: Ross Kirsling <ross.kirsling at sony.com>
Date: Sat, 14 Jun 2025 21:42:47 -0700
Subject: [PATCH] [Clang] Fix typo in is_replaceable diagnostic.

Adjustment to #143265; `because it not` should be `because it is not`.
---
 clang/include/clang/Basic/DiagnosticSemaKinds.td     | 2 +-
 clang/test/SemaCXX/type-traits-unsatisfied-diags.cpp | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index a2cf84d024193..c502f816512c5 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -1780,7 +1780,7 @@ def note_unsatisfied_trait_reason
            "%HasArcLifetime{has an ARC lifetime qualifier}|"
            "%VLA{is a variably-modified type}|"
            "%VBase{has a virtual base %1}|"
-           "%NotScalarOrClass{not %select{a|an array of objects of}1 scalar or "
+           "%NotScalarOrClass{is not %select{a|an array of objects of}1 scalar or "
            "class type}|"
            "%NTRBase{has a non-trivially-relocatable base %1}|"
            "%NTRField{has a non-trivially-relocatable member %1 of type %2}|"
diff --git a/clang/test/SemaCXX/type-traits-unsatisfied-diags.cpp b/clang/test/SemaCXX/type-traits-unsatisfied-diags.cpp
index d0b3f294fbcab..c431c364bb1c9 100644
--- a/clang/test/SemaCXX/type-traits-unsatisfied-diags.cpp
+++ b/clang/test/SemaCXX/type-traits-unsatisfied-diags.cpp
@@ -166,7 +166,7 @@ static_assert(__builtin_is_replaceable(const volatile int));
 static_assert(__builtin_is_replaceable(void()));
 // expected-error at -1 {{static assertion failed due to requirement '__builtin_is_replaceable(void ())}} \
 // expected-note at -1 {{'void ()' is not replaceable}} \
-// expected-note at -1 {{because it not a scalar or class type}}
+// expected-note at -1 {{because it is not a scalar or class type}}
 
 struct B {
  virtual ~B();