Remove unnecessary command prompts

modules/ROOT/pages/_partials/proc_enabling-nested-virtualization-in-kvm.adoc

@@ -10,7 +10,7 @@ For Intel processors, check the `/sys/module/kvm_intel/parameters/nested` file.
 For example:
 
 ----
-$ cat /sys/module/kvm_intel/parameters/nested
+cat /sys/module/kvm_intel/parameters/nested
 Y
 ----
 
@@ -22,12 +22,12 @@ To enable nested virtualization for Intel processors:
 . Shut down all running VMs and unload the `kvm_probe` module:
 +
 ----                                
-$ sudo modprobe -r kvm_intel
+sudo modprobe -r kvm_intel
 ----
 . Activate the nesting feature:
 +
 ----
-$ sudo modprobe kvm_intel nested=1
+sudo modprobe kvm_intel nested=1
 ----
 +
 . Nested virtualization is enabled until the host is rebooted. To enable it permanently, add the following line to the `/etc/modprobe.d/kvm.conf` file:
@@ -41,12 +41,12 @@ To enable nested virtualization for AMD processors:
 . Shut down all running VMs and unload the `kvm_amd` module:
 +
 ----                                
-$ sudo modprobe -r kvm_amd
+sudo modprobe -r kvm_amd
 ----
 . Activate the nesting feature:
 +
 ----                    
-$ sudo modprobe kvm_amd nested=1
+sudo modprobe kvm_amd nested=1
 ----    
 . Nested virtualization is enabled until the host is rebooted. To enable it permanently, add the following line to the `/etc/modprobe.d/kvm.conf` file:                        
 +

modules/ROOT/pages/_partials/proc_testing-nested-virtualization.adoc

@@ -5,13 +5,13 @@
 . On the virtual machine, run:
 +
 ----
-$ sudo dnf group install virtualization
+sudo dnf group install virtualization
 ----
 +
 . Verify that the virtual machine has virtualization correctly set up:
 +
 ----
-$ sudo virt-host-validate
+sudo virt-host-validate
   QEMU: Checking for hardware virtualization                                 : PASS
   QEMU: Checking if device /dev/kvm exists                                   : PASS
   QEMU: Checking if device /dev/kvm is accessible                            : PASS