[clang] [Documentation][Blocks ABI] Fix typoed integer (PR #65688)

[Shivam Gupta via cfe-commits]

https://github.com/xgupta updated https://github.com/llvm/llvm-project/pull/65688

>From eede884bb0e374d6ce0db4811ab1a62fc21f4c2c Mon Sep 17 00:00:00 2001
From: Alcaro <floating at muncher.se>
Date: Fri, 4 Jun 2021 09:25:40 +0200
Subject: [PATCH] Fix typoed integer

---
 clang/docs/Block-ABI-Apple.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/docs/Block-ABI-Apple.rst b/clang/docs/Block-ABI-Apple.rst
index e21a8b68b5cd1..250d198ba6181 100644
--- a/clang/docs/Block-ABI-Apple.rst
+++ b/clang/docs/Block-ABI-Apple.rst
@@ -80,7 +80,7 @@ The following flags bits are in use thusly for a possible ABI.2010.3.16:
 In 10.6.ABI the (1<<29) was usually set and was always ignored by the runtime -
 it had been a transitional marker that did not get deleted after the
 transition. This bit is now paired with (1<<30), and represented as the pair
-(3<<30), for the following combinations of valid bit settings, and their
+(3<<29), for the following combinations of valid bit settings, and their
 meanings:
 
 .. code-block:: c