Update macOS backend documentation links (#17285)

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cc @mergennachin @byjlw

Author: psiddh

docs/source/desktop-backends.md

@@ -10,8 +10,8 @@ Available hardware acceleration backends for desktop platforms.
 
 ## macOS Backends
 
-- {doc}`desktop-coreml` — CoreML (recommended for Apple Silicon)
-- {doc}`desktop-mps` — Metal Performance Shaders (Apple Silicon GPU)
+- {doc}`backends/coreml/coreml-overview` — CoreML (recommended for Apple Silicon)
+- {doc}`backends/mps/mps-overview` — Metal Performance Shaders (Apple Silicon GPU)
 - {doc}`desktop-xnnpack` — XNNPACK (CPU acceleration)
 
 ## Windows Backends
@@ -23,5 +23,5 @@ Available hardware acceleration backends for desktop platforms.
 :hidden:
 desktop-xnnpack
 desktop-openvino
-desktop-coreml
-desktop-mps
+backends/coreml/coreml-overview
+backends/mps/mps-overview