docs: fix spelling/grammar in What's New for Talos 0.9

From PR siderolabs#3269

Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>

website/content/docs/v0.9/Introduction/what-is-new.md

@@ -5,38 +5,38 @@ weight: 5
 
 ## Control Plane as Static Pods
 
-Talos now runs Kubernetes control plane as static pods managed via machine configuration.
-This change makes bootstrap process much more stable and resilient to failures.
-For single control plane node clusters it eliminates bugs with control plane being unavailable after a reboot.
-As control plane configuration is managed via Talos API, even if control plane configuration was wrong and
-API server is not available, change can be rolled back using `talosctl` to bring the control plane back up.
+Talos now runs the Kubernetes control plane as static pods managed via machine configuration.
+This change makes the bootstrap process much more stable and resilient to failures.
+For single control plane node clusters it eliminates bugs with the control plane being unavailable after a reboot.
+As the control plane configuration is managed via the Talos API, even if the control plane configuration was wrong and
+the API server is not available, the change can be rolled back using `talosctl` to bring the control plane back up.
 When upgrading from Talos 0.8, control plane can be [converted](../../guides/converting-control-plane/) to run as static pods.
 
 ## ECDSA Certificates and Keys for Kubernetes
 
 Talos now generates uses ECDSA keys for Kubernetes and etcd PKI.
-ECDSA keys are much smaller and all PKI operations are much faster (for example, generating certificate from the CA) which
+ECDSA keys are much smaller than RSA keys and all PKI operations are much faster (for example, generating a certificate from the CA) which
 leads to much faster bootstrap and boot times.
 
 ## Immediate Machine Configuration Updates
 
-Changes to `.cluster` part of Talos machine configuration can now be [applied immediately](../../guides/editing-machine-configuration) (without a reboot).
-This allows for example updating versions of control plane components, adding additional arguments or modifying bootstrap manifests.
-Future versions of Talos will expand on that to allow most of the machine configuration to be applied without a reboot.
+Changes to the `.cluster` part of Talos machine configuration can now be [applied immediately](../../guides/editing-machine-configuration) (without a reboot).
+This allows, for example, updating versions of control plane components, adding additional arguments or modifying bootstrap manifests.
+Future versions of Talos will expand on this to allow most of the machine configuration to be applied without a reboot.
 
 ## Disk Encryption
 
 Talos now supports encryption for `STATE` and `EPHEMERAL` partitions of the system disk.
-`STATE` partition holds machine configuration and `EPHEMERAL` partition is mounted as `/var` which stores container runtime
-state, configuration files laid on top of Talos read-only immutable root filesystem.
-Encryption key in Talos 0.9 is derived from the Node UUID which is unique machine identifier provided by the manufacturer.
-Disk encryption is not enabled by default, it needs to be [enabled](../../guides/disk-encryption/) via machine configuration.
+The `STATE` partition holds machine configuration and the `EPHEMERAL` partition is mounted as `/var` which stores container runtime
+state, and configuration files laid on top of Talos read-only immutable root filesystem.
+The encryption key in Talos 0.9 is derived from the Node UUID which is a unique machine identifier provided by the manufacturer.
+Disk encryption is not enabled by default: it needs to be [enabled](../../guides/disk-encryption/) via machine configuration.
 
 ## Virtual IP for the Control Plane Endpoint
 
-Talos adds support for Virtual L2 [shared IP](../../guides/vip/) for the control plane: control plane nodes make sure only one of the nodes
-adverties shared IP via ARP.
-If one of the control plane nodes goes down, another node takes over shared IP.
+Talos adds support for Virtual L2 [shared IP](../../guides/vip/) for the control plane: control plane nodes ensure only one of the nodes
+advertise the shared IP via ARP.
+If one of the control plane nodes goes down, another node takes over the shared IP.
 
 ## Updated Components