Update xml/vm_security.xml

Co-authored-by: Daria Vladykina <[email protected]>

xml/vm_security.xml

@@ -190,7 +190,7 @@ To protect the virtual machine with AMD SEV-SNP, set the correct firmware by mod
 <sect1 xml:id="vm-verify-amd-sv-snp-vm">
 <title>Verifying the AMD SEV-SNP virtual machine</title>
 <para>
-From the appearance of the virtual machine one can not tell whether it runs in a confidential computing environment or not. But there are several ways to verify that from within the virtual machine.</para>
+From the appearance of the virtual machine, one cannot tell whether it runs in a confidential computing environment. But there are several ways to verify that from within the virtual machine.</para>
 <para>To check the kernel log, run the command:</para>
 <screen>&prompt.sudo; <command>dmesg | grep -i sev-snp</command>
 [ 1.986186] Memory Encryption Features active: AMD SEV SEV-ES SEV-SNP</screen>