Documentation: KVM: update amd-memory-encryption.rst references

Changeset daec8d408308 ("Documentation: KVM: add separate directories for architecture-specific documentation")
renamed: Documentation/virt/kvm/amd-memory-encryption.rst
to: Documentation/virt/kvm/x86/amd-memory-encryption.rst.

Update the cross-references accordingly.

Fixes: daec8d408308 ("Documentation: KVM: add separate directories for architecture-specific documentation")
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jonathan Corbet <[e-mail]>

Documentation/admin-guide/kernel-parameters.txt

···
 			mem_encrypt=on:		Activate SME
 			mem_encrypt=off:	Do not activate SME
 
-			Refer to Documentation/virt/kvm/amd-memory-encryption.rst
+			Refer to Documentation/virt/kvm/x86/amd-memory-encryption.rst
 			for details on when memory encryption can be activated.
 
 	mem_sleep_default=	[SUSPEND] Default system suspend mode:

Documentation/security/secrets/coco.rst

···
 
 See [sev-api-spec]_ for more info regarding SEV ``LAUNCH_SECRET`` operation.
 
-.. [sev] Documentation/virt/kvm/amd-memory-encryption.rst
+.. [sev] Documentation/virt/kvm/x86/amd-memory-encryption.rst
 .. [secrets-coco-abi] Documentation/ABI/testing/securityfs-secrets-coco
 .. [sev-api-spec] https://www.amd.com/system/files/TechDocs/55766_SEV-KM_API_Specification.pdf

Documentation/virt/kvm/api.rst

···
 
 Currently, this ioctl is used for issuing Secure Encrypted Virtualization
 (SEV) commands on AMD Processors. The SEV commands are defined in
-Documentation/virt/kvm/amd-memory-encryption.rst.
+Documentation/virt/kvm/x86/amd-memory-encryption.rst.
 
 4.111 KVM_MEMORY_ENCRYPT_REG_REGION
 -----------------------------------