Update sig for QEMU image.

docs/complianced_image/QEMU/how_to_creating_and_making_a_QEMU_img.mkd

@@ -174,6 +174,6 @@ $ sudo poweroff
 ## sign QEMU image 
 ssh to QEMU server, find QEMU image dir, sign the QEMU image: 
 ```
-root@debian-9:/opt/images# gpg -u samson -b debian9.9-harbian-0910.qcow2
+root@debian-9:/opt/images# gpg -u Samson -b debian9.9-harbian-0910.qcow2
 ```
 

docs/complianced_image/QEMU/how_to_use_QEMU_image_of_harbian_audit_complianced_Debian_9.mkd

@@ -24,9 +24,9 @@ passwd: 2wsx#EDC4rfv%TGB6yhn
 ```
 $ wget https://github.com/hardenedlinux/harbian-audit/blob/master/docs/complianced_image/QEMU/debian9.9-harbian-0910.qcow2.sig  
 $ wget https://github.com/hardenedlinux/harbian-audit/blob/master/docs/complianced_image/QEMU/signature/debian9.9-harbian-0910.qcow2.tar.gz.sig 
-$ gpg -u samson --verify debian9.9-harbian-0910.qcow2.tar.gz.sig debian9.9-harbian-0910.qcow2.tar.gz
+$ gpg -u Samson --verify debian9.9-harbian-0910.qcow2.tar.gz.sig debian9.9-harbian-0910.qcow2.tar.gz
 $ tar -xzvf debian9.9-harbian-0910.qcow2.tar.gz   
-$ gpg -u samson --verify debian9.9-harbian-0910.qcow2.sig debian9.9-harbian-0910.qcow2  
+$ gpg -u Samson --verify debian9.9-harbian-0910.qcow2.sig debian9.9-harbian-0910.qcow2  
 ```
 
 ## Use the QEMU image to create virtual machine