Tidy up relese notes for 6.0.0

Change-Id: I21b71c8b2886ad063ed8e37567ef9ee0a5a52cfa

releasenotes/notes/avoid-grub2-using-efibootmgr-bd27c0978d1cf71b.yaml

@@ -1,5 +1,5 @@
 ---
 fixes:
   - |
-    Fixes the workflow for wholedisk images when using uefi boot mode, when
-    possible it will use efibootmgr instead of grub2 to update the nvram.
+    Fixes the workflow for wholedisk images when using UEFI boot mode, when
+    possible it will use efibootmgr instead of grub2 to update the NVRAM.

releasenotes/notes/bumpsipalookupattempts-29de7c949aaf6556.yaml

@@ -1,5 +1,6 @@
 ---
 other:
   - |
-    Bumps up ipa-ip-lookup-attempts to 6, adding extra time
-    for networking to be setup before giving up.
+    Increases the default value for the ``ipa-ip-lookup-attempts`` kernel
+    argument to 6, adding extra time for networking to be set up before giving
+    up.

releasenotes/notes/fix-nic-without-numa-node-b401f97c46afa4a1.yaml

@@ -1,6 +1,6 @@
 ---
 fixes:
   - |
-    Skips NIC numa_node discovery if it's not assigned to a numa_node as
+    Skips NIC ``numa_node`` discovery if it's not assigned to a numa_node as
     in some rare case, such as a VM with virtual NUMA node, NICs might
-    not be in a NUMA node and this breaks numa-topology discovery.
+    not be in a NUMA node and this breaks ``numa-topology`` discovery.

releasenotes/notes/software_raid_use_rootfs_uuid-9149cc0c8638d5d5.yaml

@@ -5,4 +5,4 @@ upgrade:
     is in the first partition of the deployed image. Instead, the IPA will use
     the UUID passed from the conductor to identify the root partition. Before
     upgrades, the root file system UUID needs hence to be set as part of the
-    node's 'driver_internal_info' or as 'rootfs_uuid' image metadata.
+    node's ``driver_internal_info`` or as ``rootfs_uuid`` image metadata.