docs: fix grammatical errors and spelling issues in documentation (#547)

* docs: fix README.md typo

- change "For a example" to "For an example"

* docs: fix grammar errors in documentation

- read and write permissions。 to  read and write permissions.

* docs: fix grammatical error in addon writing guide

- **docs/pages/addons/write.md**: Changed "Write a Addon" to "Write an Addon" in title

* docs: fix grammatical error in third-party integration guide

- **docs/pages/guide/third-party/index.md**: Changed "in a article" to "in an article"

* docs: fix "This is a example" to "This is an example"

* docs: fix spelling "archieved" to "achieved" in why.md

README.md

@@ -41,7 +41,7 @@ pnpm create valaxy
 # yarn create valaxy
 ```
 
-For a example, you can see [demo/yun](./demo/yun/) folder.
+For an example, you can see [demo/yun](./demo/yun/) folder.
 
 ## Features
 

docs/pages/addons/write.md

@@ -1,5 +1,5 @@
 ---
-title: Write a Addon
+title: Write an Addon
 title_zh: 编写一个插件
 categories:
   - addon

docs/pages/dev/docs.md

@@ -26,7 +26,7 @@ Valaxy 将中英文写一个 Markdown 文件中，因此您可以很容易地进
 :::
 
 <div>
-This is a example.
+This is an example.
 </div>
 ```
 

docs/pages/guide/deploy.md

@@ -111,7 +111,7 @@ This is because when there is a directory with the same name, GitHub Pages will
 ::: en
 When you use `pnpm create valaxy` to create a template project, it contains the file [`.github/workflows/gh-pages.yml`](https://github.com/YunYouJun/valaxy/blob/main/packages/create-valaxy/template-blog/.github/workflows/gh-pages.yml) for the CI workflow of GitHub Actions.
 
-- Select the Github repository, go to `Settings`-> `Action` -> `General` -> `Workflow permissions`, and select `read and write permissions`。
+- Select the Github repository, go to `Settings`-> `Action` -> `General` -> `Workflow permissions`, and select `read and write permissions`.
 - Push to your GitHub repository, and go to `Settings` -> `Pages`. Select `gh-pages` branch.
 
 > `gh-pages` has been automatically deployed by `.github/workflows/gh-pages.yml`.

docs/pages/guide/third-party/index.md

@@ -153,7 +153,7 @@ Valaxy provides a quick integration plug-in: [valaxy-addon-algolia](https://gith
 ::: en
 > Implementd based on [Aplayer](https://github.com/DIYgod/APlayer) and [MetingJS](https://github.com/metowolf/MetingJS)
 
-For example, add a song from Netease Cloud in a article:
+For example, add a song from Netease Cloud in an article:
 
 Enable it in the FrontMatter of the article:
 :::

docs/pages/guide/why.md

@@ -191,7 +191,7 @@ iles 与 Valaxy 的一些基础结构功能很相似，它相比 Vitepress 拥
 :::
 
 ::: en
-After completing the development of Valaxy's basic structures, I learned about iles from my group friend, which is very similar to many features I have archieved.
+After completing the development of Valaxy's basic structures, I learned about iles from my group friend, which is very similar to many features I have archived.
 
 It has more features than Vitepress and is also suitable for writing a document with more interaction.