[llvm] [RemoveDIs] Update all docs to use debug records (PR #91768)

[J. Ryan Stinnett via llvm-commits]

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@@ -169,83 +169,96 @@ Debug information descriptors are `specialized metadata nodes
 
 There are two models for defining the values of source variables at different
 states of the program and tracking these values through optimization and code
-generation: :ref:`intrinsic function calls <format_common_intrinsics>`, the
-current default, and :ref:`debug records <debug_records>`, which are a new
-non-instruction-based model
-(for an explanation of how this works and why it is desirable, see the
-`RemoveDIs <RemoveDIsDebugInfo.html>`_ document). Each module must use one or
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jryans wrote:

Perhaps retain some reference to the migration doc here for any archaeologists trying to understand what happened...?

https://github.com/llvm/llvm-project/pull/91768