qapi/misc-target: Fix the doc related SGXEPCSection

qapi/misc-target: Fix the doc related SGXEPCSection

The "sections" field of SGXInfo is used to gather EPC section
information for both the guest and the host. Therefore, delete the "for
guest" limitation.

Additionally, avoid the abbreviation "info" and use "information"
instead. And for SGXEPCSection, delete the redundant word "info".

Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Link: https://lore.kernel.org/r/20250513143131.2008078-2-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>