Fixed code block formatting
Fixed code block formatting

Various code blocks were not formatted correctly

Signed-off-by: Sebastien Goasguen <250735a416ca4fba2eb297c8d62b7a634570c133@gmail.com>

apache/cloudstack-docs-install,unodba/cloudstack-docs-install,apache/cloudstack-docs-install,pdion891/cloudstack-docs-install,apache/cloudstack-docs-install,pdion891/cloudstack-docs-install,pdion891/cloudstack-docs-install,unodba/cloudstack-docs-install,unodba/cloudstack-docs-install