[llvm] [Docs][DebugInfo][RemoveDIs] Revise debug info migration guide title (PR #81480)

[J. Ryan Stinnett via llvm-commits]

https://github.com/jryans created https://github.com/llvm/llvm-project/pull/81480

As @aeubanks [mentioned](https://github.com/llvm/llvm-project/pull/79167#issuecomment-1935067804), the debug info migration guide could use a better title for clarity. This revises the title to make the topic more obvious.

>From d08c0ed97bbbcc7f2966326aa23a6710de13a54d Mon Sep 17 00:00:00 2001
From: "J. Ryan Stinnett" <jryans at gmail.com>
Date: Mon, 12 Feb 2024 13:38:50 +0000
Subject: [PATCH] [Docs][DebugInfo][RemoveDIs] Revise debug info migration
 guide title

---
 llvm/docs/RemoveDIsDebugInfo.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/docs/RemoveDIsDebugInfo.md b/llvm/docs/RemoveDIsDebugInfo.md
index e871fed43a7cc6..a0577678e20fcd 100644
--- a/llvm/docs/RemoveDIsDebugInfo.md
+++ b/llvm/docs/RemoveDIsDebugInfo.md
@@ -1,4 +1,4 @@
-# What's all this then?
+# Debug info migration: From intrinsics to records
 
 We're planning on removing debug info intrinsics from LLVM, as they're slow, unwieldy and can confuse optimisation passes if they're not expecting them. Instead of having a sequence of instructions that looks like this: