Apply suggestions from code review

Co-authored-by: Martin Vidner <martin@vidner.net>

src/lib/bootloader/grub2_widgets.rb

@@ -360,8 +360,8 @@ def help
           "This does not turn on secure booting. " \
           "It only switches to the new secure-boot enabled boot data format. " \
           "Note that this new format works only on z15 or later and "\
-          "disk type supports depends on hardware. " \
-          "For details consult requirements at " \
+          "only for some disk types. " \
+          "For more details see the requirements at  " \
           "https://www.ibm.com/docs/en/linux-on-systems?topic=introduction-requirements</p>"
         )
       else
@@ -391,9 +391,10 @@ def validate
       Yast::Popup.ContinueCancel(
         _(
           "The secure boot IPL works only on IBM z15, IBM LinuxONE III or later.\n" \
-          "NVMe disks works from IBM LinuxONE III.\n" \
-          "FC-attached SCSI disks needs at least IBM LinuxONE III or a IBM z15.\n" \
-          "ECKD DASDs with CDL layout works on IBM z16, LinuxONE 4 or newer.\n" \
+          "Also note the following restrictions:" \
+          "NVMe disks work since IBM LinuxONE III.\n" \
+          "FC-attached SCSI disks need at least IBM LinuxONE III or IBM z15.\n" \
+          "ECKD DASDs with CDL layout work on IBM z16, LinuxONE 4 or newer.\n" \
           "If these requirements are not met, the system will not IPL in secure mode."
         )
       )