Update README.md

Fix typos.

packages/ui-helm-chart/README.md

@@ -2,32 +2,31 @@
 
 ## Using with [ytop-chart](https://github.com/ytsaurus/ytsaurus-k8s-operator/pkgs/container/ytop-chart)
 
-Follow all required steps to [Starting YTsaurus cluster](https://ytsaurus.tech/docs/en/overview/try-yt#starting-ytsaurus-cluster1)
-And then install the chart:
+Follow all required steps to [start the YTsaurus cluster](https://ytsaurus.tech/docs/en/overview/try-yt#starting-ytsaurus-cluster1). Then install the chart:
 ```bash
 helm upgrade --install ytsaurus-ui github/ytsaurus-ui/packages/ui-helm-chart/
 ```
 
 ## Using with a custom cluster
 
-### Prerequirements 
+### Pre-requirements 
 
-The instructions belows describe how to start YT UI from the helm cahrt.
-It is supposed you have already:
-- configured `kubectl` cli-tool (for example use [`minikube`](https://minikube.sigs.k8s.io/docs/start/))
-- started your YT-cluster and knows hostname of http_proxy
-- prepared a special robot-user for YT UI and ready to provide its token (see [Token management](https://ytsaurus.tech/docs/user-guide/storage/auth))
+The instructions below describe how to start the YTsaurus UI from the helm chart. You are supposed to have already:
+- configured the `kubectl` cli-tool (for example, use [minikube](https://minikube.sigs.k8s.io/docs/start/)),
+- started your YT-cluster and know the hostname of `http_proxy`,
+- prepared a special robot-user for the YTsaurus UI and ready to provide its token (see the [Token management](https://ytsaurus.tech/docs/user-guide/storage/auth) section).
 
 ### Quick start
 
-By default the chart expects existense of `yt-ui-secret` with `yt-interface-secret.json` key. The secret might be created by the commands bellow:
+By default, the chart expects existence of `yt-ui-secret` with the `yt-interface-secret.json` key. The secret can be created by the following commands:
 
 ```bash
 read -sp "TOKEN: " TOKEN ; echo '{"oauthToken":"'$TOKEN'"}' > tmp.json
 kubectl create secret generic yt-ui-secret --from-literal="yt-interface-secret.json=$(cat tmp.json)" && rm tmp.json
 ```
 
-Also you have to provide description of your cluster:
+Also, you have to provide a description of your cluster:
+
 ```bash
 read -p "Cluster id: " id_; read -p "http_proxy hostname: " proxy_; read -p "Use https [true/false]: " secure_; read -p "NODE_TLS_REJECT_UNAUTHORIZED [1/0]: " tlsrej_; (
 tee values.yaml << _EOF
@@ -54,14 +53,16 @@ _EOF
 )
 ```
 
-Then you are redy to install/upgrade the chart:
+Then you are ready to install or upgrade the chart:
+
 ```bash
 helm upgrade --install yt-ui github/ytsaurus-ui/packages/ui-helm-chart/ -f values.yaml
 # or run specific version of UI (all versions: https://github.com/ytsaurus/ytsaurus-ui/pkgs/container/ui)
 helm upgrade --install yt-ui github/ytsaurus-ui/packages/ui-helm-chart/ -f values.yaml --set ui.image.tag=1.60.1
 ```
 
-You may want to add port-forwarding to open it in your browser:
+You may want to add port-forwarding to open the YTsaurus UI in your browser:
+
 ```bash
 kubectl port-forward deployment/yt-ui-ytsaurus-ui-chart 8080:80
-```
+```