[llvm] [docs] fix unclosed parentheses in 'Pointer Authentication' (PR #88861)

[via llvm-commits]

https://github.com/YunJin77 created https://github.com/llvm/llvm-project/pull/88861

Fix unclosed parentheses in [Pointer Authentication](https://llvm.org/docs/PointerAuth.html).

>From ebf55eeb570d61831b40d1329971cd41a78dddad Mon Sep 17 00:00:00 2001
From: liuly <me at liuly.moe>
Date: Tue, 16 Apr 2024 17:14:00 +0800
Subject: [PATCH] [docs] fix unclosed parentheses in 'Pointer Authentication'

---
 llvm/docs/PointerAuth.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/llvm/docs/PointerAuth.md b/llvm/docs/PointerAuth.md
index a8d2b4d8f5f0bd..f401b9683c3c47 100644
--- a/llvm/docs/PointerAuth.md
+++ b/llvm/docs/PointerAuth.md
@@ -120,7 +120,7 @@ It returns a raw pointer value.  It does **not** check that the
 signature is valid.
 
 `key` should identify a key that is appropriate for `value`, as defined
-by the target-specific [keys](#keys)).
+by the target-specific [keys](#keys).
 
 If `value` is a raw pointer value, it is returned as-is (provided the `key`
 is appropriate for the pointer).
@@ -238,7 +238,7 @@ memory, negating the security benefit provided by pointer authentication.
 To prevent that, the `ptrauth` operand bundle may be used: it guarantees that
 the intermediate call target is kept in a register and never stored to memory.
 This hardening benefit is similar to that provided by
-[`llvm.ptrauth.resign`](#llvm-ptrauth-resign)).
+[`llvm.ptrauth.resign`](#llvm-ptrauth-resign).
 
 Concretely: