docs(v2): proofread docs (#2527)

website/docs/theme-classic.md

@@ -17,10 +17,10 @@ To remove the ability to switch on dark mode, there is an option `themeConfig.di
 
 ```js {4} title="docusaurus.config.js"
 module.exports = {
-  ...
+  // ...
   themeConfig: {
     disableDarkMode: false,
-    ...
+    // ...
   },
 };
 ```
@@ -31,14 +31,14 @@ You can configure a default image that will be used for your meta tag, in partic
 
 ```js {4-6} title="docusaurus.config.js"
 module.exports = {
-  ...
+  // ...
   themeConfig: {
     // Relative to your site's "static" directory.
     // Cannot be SVGs. Can be external URLs too.
     image: 'img/docusaurus.png',
-    ...
+    // ...
   },
-}
+};
 ```
 
 ### Announcement bar
@@ -47,17 +47,18 @@ Sometimes you want to announce something in your website. Just for such a case,
 
 ```js {4-9} title="docusaurus.config.js"
 module.exports = {
-  ...
+  // ...
   themeConfig: {
     announcementBar: {
       id: 'support_us', // Any value that will identify this message
-      content: 'We are looking to revamp our docs, please fill <a target="_blank" rel="noopener noreferrer" href="#">this survey</a>',
+      content:
+        'We are looking to revamp our docs, please fill <a target="_blank" rel="noopener noreferrer" href="#">this survey</a>',
       backgroundColor: '#fafbfc', // Defaults to `#fff`
       textColor: '#091E42', // Defaults to `#000`
     },
-    ...
+    // ...
   },
-}
+};
 ```
 
 ## Hooks
@@ -91,7 +92,7 @@ To improve dark mode support, you can also set a different logo for this mode.
 
 ```js {5-11} title="docusaurus.config.js"
 module.exports = {
-  ...
+  // ...
   themeConfig: {
     navbar: {
       title: 'Site Title',
@@ -103,9 +104,9 @@ module.exports = {
         target: '_self', // by default, this value is calculated based on the `href` attribute (the external link will open in a new tab, all others in the current one)
       },
     },
-    ...
+    // ...
   },
-}
+};
 ```
 
 ### Navbar Links
@@ -114,7 +115,7 @@ You can add links to the navbar via `themeConfig.navbar.links`:
 
 ```js {5-15} title="docusaurus.config.js"
 module.exports = {
-  ...
+  // ...
   themeConfig: {
     navbar: {
       links: [
@@ -129,9 +130,9 @@ module.exports = {
         // ... other links
       ],
     },
-    ...
+    // ...
   },
-}
+};
 ```
 
 Outbound links automatically get `target="_blank" rel="noopener noreferrer"` attributes.
@@ -142,7 +143,7 @@ Navbar items can also be dropdown items by specifying the `items`, an inner arra
 
 ```js {9-19} title="docusaurus.config.js"
 module.exports = {
-  ...
+  // ...
   themeConfig: {
     navbar: {
       links: [
@@ -163,9 +164,9 @@ module.exports = {
         },
       ],
     },
-    ...
+    // ...
   },
-}
+};
 ```
 
 ### Auto-hide sticky navbar
@@ -174,14 +175,14 @@ You can enable this cool UI feature that automatically hides the navbar when a u
 
 ```js {5} title="docusaurus.config.js"
 module.exports = {
-  ...
+  // ...
   themeConfig: {
     navbar: {
       hideOnScroll: true,
     },
-    ...
+    // ...
   },
-}
+};
 ```
 
 ## Footer
@@ -194,13 +195,15 @@ Docusaurus uses [Prism React Renderer](https://github.com/FormidableLabs/prism-r
 
 By default, we use [Palenight](https://github.com/FormidableLabs/prism-react-renderer/blob/master/src/themes/palenight.js) as syntax highlighting theme. You can specify a custom theme from the [list of available themes](https://github.com/FormidableLabs/prism-react-renderer/tree/master/src/themes). If you want to use a different syntax highlighting theme when the site is in dark mode, you may also do so.
 
-```js {4-5} title="docusaurus.config.js"
+```js {5-6} title="docusaurus.config.js"
 module.exports = {
+  // ...
   themeConfig: {
     prism: {
       theme: require('prism-react-renderer/themes/github'),
       darkTheme: require('prism-react-renderer/themes/dracula'),
     },
+    // ...
   },
 };
 ```
@@ -213,12 +216,12 @@ You can set a default language for code blocks if no language is added after the
 
 ```js {5} title="docusaurus.config.js"
 module.exports = {
-  ...
+  // ...
   themeConfig: {
     prism: {
       defaultLanguage: 'javascript',
     },
-    ...
+    // ...
   },
 };
 ```