Fix some grammar and spelling issues in release notes

Change-Id: Ib94c31b2dcf8de7879e7bd1c0b77e6de32c8c2cb

releasenotes/notes/UUID-started_at-finished_at-in-the-status-API-7860312102923938.yaml

@@ -1,10 +1,9 @@
 ---
 features:
   - |
-   enhance the introspection status returned from
+   Extend the introspection status returned from
    ``GET@/v1/introspection/<Node Id>`` to contain the ``uuid``, ``started_at``
-   and ``finished_at`` fields
+   and ``finished_at`` fields.
 
 upgrade:
-  - |
-   new dependencies: pytz
+  - Add a new dependency, ``pytz``.

releasenotes/notes/add-lldp-basic-plugin-98aebcf43e60931b.yaml

@@ -1,4 +1,4 @@
 ---
 features:
-  - Added a plugin to parse raw LLDP Basic Management, 802.1, and
-    802.3 TLVs and store the data back in Swift.
+  - Add a plugin to parse raw LLDP Basic Management, 802.1, and
+    802.3 TLVs and store the data in Swift.

releasenotes/notes/add-support-for-listing-all-introspection-statuses-2a3d4379c3854894.yaml

@@ -1,9 +1,10 @@
 ---
 features:
   - |
-   Add an API endpoint for listing introspection statuses, operators can get
-   status for all running or previously run introspection processing.
+   Add an API endpoint for listing introspection statuses. Operators can use
+   this to get the status for all running or previously run introspection
+   processing.
 
   - |
-    Introduced a new configuration option ``api_max_limit`` that defines the
+    Introduce a new configuration option ``api_max_limit`` that defines the
     maximum number of items per page when API results are paginated.

releasenotes/notes/change_started_finished_at_type_to_datetime-c5617e598350970c.yaml

@@ -1,11 +1,11 @@
 ---
 fixes:
   - |
-    DB's columns started_at and finished_at are defined as float type,
-    as result timestamp doesn't fit into default Float size. This change
-    migrates columns type to DateTime.
+    Change database columns ``started_at`` and ``finished_at`` to type
+    DateTime from type Float so that timestamps fit into these columns
+    correctly.
 upgrade:
   - |
-    New migration from Float to DateTime consists data migration,
-    which could take some time, based on the number of introspection
+    A database migration is required to change some columns from Float to
+    DateTime type. This may take some time based on the number of introspection
     statuses in DB.

releasenotes/notes/fix-deadlock-during-cleanup-bcb6b517ef299791.yaml

@@ -1,4 +1,5 @@
 ---
 fixes:
   - |
-    Periodic clean up fails with DBDeadlock if introspection timeout.
+    Fix bug where periodic clean up failed with DBDeadlock if introspection
+    timed out.

releasenotes/notes/fix-periodic-tasks-configuration-edd167f0146e60b5.yaml

@@ -1,5 +1,6 @@
 ---
 fixes:
   - |
-    The configuration of the ``periodic_clean_up`` and ``periodic_update`` tasks
-    is now applied after the file ``inspector.conf`` is read
+    Ensure the configuration options ``firewall.firewall_update_period`` and
+    ``clean_up_period`` are applied to the ``periodic_clean_up`` and
+    ``periodic_update`` tasks after the config file is read.

releasenotes/notes/fix_llc_hook_bugs-efeea008c2f792eb.yaml

@@ -1,6 +1,6 @@
 ---
 fixes:
-  - LLC hook now formats the chassis id and port id MAC addresses into Unix
+  - LLC hook now formats the chassis ID and port ID MAC addresses into Unix
     format as expected by ironic.
-  - LLC hook ensures that correct port information is passed to patch_port
+  - LLC hook ensures that correct port information is passed to the patch_port
     function

releasenotes/notes/infiniband-support-960d6846e326dec4.yaml

@@ -1,8 +1,8 @@
 ---
 features:
   - |
-    InfiniBand interface discovery is supported in the introspection.
-    Therefore the ironic-inspector will add the client-id to the corresponding
-    ironic port that represent InfiniBand interface. The ironic-inspector
-    should be configured with ``firewall.ethoib_interfaces`` to indicate what are
-    Ethernet Over InfiniBand Interfaces that are used for DHCP.
+    InfiniBand interface discovery is now supported through introspection.  The
+    ironic-inspector will add the client-id to the corresponding ironic port
+    that represents the InfiniBand interface. The ironic-inspector should be
+    configured with a list of interfaces ``firewall.ethoib_interfaces`` to
+    indicate which Ethernet Over InfiniBand Interfaces are used for DHCP.

releasenotes/notes/introspection-delay-drivers-deprecation-1d0c25b112fbd4da.yaml

@@ -1,9 +1,10 @@
 ---
 upgrade:
   - |
-    The configuration option "introspection_delay_drivers" was changed to
-    ``.*``, which means that "introspection_delay" is now applied to all
-    drivers. Set "introspection_delay" to 0 to disable the delay.
+    The default value for the configuration option
+    "introspection_delay_drivers" was changed to ``.*``, which means that by
+    default "introspection_delay" is now applied to all drivers. Set
+    "introspection_delay" to 0 to disable the delay.
 deprecations:
   - |
     The configuration option "introspection_delay_drivers" is deprecated.

releasenotes/notes/introspection-state-03538fac198882b6.yaml

@@ -11,6 +11,6 @@ issues:
     Node.state column.
 upgrade:
   - Node.state and Node.version_id database columns are introduced.
-  - The introspection state column defaults to the finished state.
-    If the introspection error column value on a node row isn't null,
-    the node state is changed to error.
+  - The introspection state column defaults to the state ``finished`` unless
+    the introspection error column value on a node row isn't null, then node
+    state is set to ``error``.