[clang] [LoongArch] fix description of clang option -m[no-]lam-bh (PR #113632)

[via cfe-commits]

https://github.com/tangaac created https://github.com/llvm/llvm-project/pull/113632

Fix the description of option `-mlam-bh` and `-mno-lam-bh`
Previous decription causes a `build docs-clang-html` error in #112727 

>From 9747d50c099282bd5980d9b087de8527e9f88bed Mon Sep 17 00:00:00 2001
From: tangaac <tangyan01 at loongson.cn>
Date: Fri, 25 Oct 2024 09:55:19 +0800
Subject: [PATCH] fix description of clang option -m[no-]lam-bh

---
 clang/include/clang/Driver/Options.td | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index 62603969eaf8c3..5757c385d22498 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -5400,9 +5400,9 @@ def mfrecipe : Flag<["-"], "mfrecipe">, Group<m_loongarch_Features_Group>,
 def mno_frecipe : Flag<["-"], "mno-frecipe">, Group<m_loongarch_Features_Group>,
   HelpText<"Disable frecipe.{s/d} and frsqrte.{s/d}">;
 def mlam_bh : Flag<["-"], "mlam-bh">, Group<m_loongarch_Features_Group>,
-  HelpText<"Enable amswap_[db].{b/h} and amadd_[db].{b/h}">;
+  HelpText<"Enable amswap[_db].{b/h} and amadd[_db].{b/h}">;
 def mno_lam_bh : Flag<["-"], "mno-lam-bh">, Group<m_loongarch_Features_Group>,
-  HelpText<"Disable amswap_[db].{b/h} and amadd_[db].{b/h}">;
+  HelpText<"Disable amswap[_db].{b/h} and amadd[_db].{b/h}">;
 def mannotate_tablejump : Flag<["-"], "mannotate-tablejump">, Group<m_loongarch_Features_Group>,
   HelpText<"Enable annotate table jump instruction to correlate it with the jump table.">;
 def mno_annotate_tablejump : Flag<["-"], "mno-annotate-tablejump">, Group<m_loongarch_Features_Group>,