loadbalancing

Improved or typo fixed.

Hi,

In our Chinese Documentations, we have breaking lines in original markdowns, e.g

`Plugin` 配置可直接绑定在 `Route` 上，也可以被绑定在 `Service` 或 `Consumer`上。而对于同一
个插件的配置，只能有一份是有效的，配置选择优先级总是 `Consumer` > `Route` > `Service`。

在 `conf/config.yaml` 中，可以声明本地 APISIX 节点都支持哪些插件。这是个白名单机制，不在该
白名单的插件配置，都将会被自动忽略。这个特性可用于临时关闭或打开特定插件，应对突发情况非常有效。
如果你想在现有插件的基础上新增插件，注意需要拷贝 `c

Issue description

The image in README.md is It’s too flat, you should adjust the size so that it is scaled proportionally

Environment

• your apisix-ingress-controller version (output of apisi

We tried to build dashboard docker image for ARM in #197 but failed. Since I could build dashboard docker image on m1 so there's nothing to do with the building process itself.

And since it stuck at yarn build, a large chance is free Github Actions machine is lack of memory since we also deploy QEMU to simulate arm environment, as [ref](https://stackoverflow.com/questions/59868448/rpc-error