[llvm] [llvm][docs] MemTagSanitizer is only supported on AArch64 Android (PR #120545)

[David Spickett via llvm-commits]

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@@ -28,10 +28,15 @@ memory bugs.
 Usage
 =====
 
-Compile and link your program with ``-fsanitize=memtag`` flag. This
-will only work when targeting AArch64 with MemTag extension. One
-possible way to achieve that is to add ``-target
-aarch64-linux -march=armv8+memtag`` to compilation flags.
+Compile and link your program with the ``-fsanitize=memtag`` flag. This
+will only work when targeting AArch64 Android with the memory tagging extension.
+One possible way to achieve that is to add ``-target
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DavidSpickett wrote:

Done.

https://github.com/llvm/llvm-project/pull/120545