[clang] [NFC] Eliminate trailing white space causing CI build failure (PR #84632)

[Amirreza Ashouri via cfe-commits]

https://github.com/AMP999 created https://github.com/llvm/llvm-project/pull/84632

To resolve the following issue in the CI build:
```
*** Checking for trailing whitespace left in Clang source files ***
+ grep -rnI '[[:blank:]]$' clang/lib clang/include clang/docs
clang/docs/ReleaseNotes.rst:412:- PTX is no longer included by default when compiling for CUDA. Using
+ echo '*** Trailing whitespace has been found in Clang source files as described above ***'
*** Trailing whitespace has been found in Clang source files as described above ***
+ exit 1
```

>From c122cc4e95f1e07c922983b787f95edf187b304c Mon Sep 17 00:00:00 2001
From: Amirreza Ashouri <ar.ashouri999 at gmail.com>
Date: Sat, 9 Mar 2024 18:25:07 +0330
Subject: [PATCH] [NFC] Eliminate trailing white space causing CI build failure

To resolve the following issue in the CI build:
```
*** Checking for trailing whitespace left in Clang source files ***
+ grep -rnI '[[:blank:]]$' clang/lib clang/include clang/docs
clang/docs/ReleaseNotes.rst:412:- PTX is no longer included by default when compiling for CUDA. Using
+ echo '*** Trailing whitespace has been found in Clang source files as described above ***'
*** Trailing whitespace has been found in Clang source files as described above ***
+ exit 1
```
---
 clang/docs/ReleaseNotes.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index f61dca9bbc8467..3b89d5a8720785 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -409,7 +409,7 @@ RISC-V Support
 CUDA/HIP Language Changes
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
-- PTX is no longer included by default when compiling for CUDA. Using 
+- PTX is no longer included by default when compiling for CUDA. Using
   ``--cuda-include-ptx=all`` will return the old behavior.
 
 CUDA Support