docs: remove extraneous line break tags (#7298)

website/docs/guides/markdown-features/markdown-features-react.mdx

@@ -367,8 +367,6 @@ import MyComponentSource from '!!raw-loader!@site/src/pages/examples/_myComponen
 <CodeBlock language="jsx">{MyComponentSource}</CodeBlock>
 
 </BrowserWindow>
-
-<br />
 ```
 
 See [using code blocks in JSX](./markdown-features-code-blocks.mdx#usage-in-jsx) for more details of the `<CodeBlock>` component.
@@ -409,15 +407,13 @@ import PartialExample from './_markdown-partial-example.mdx';
 <BrowserWindow>
   <PartialExample name="Sebastien" />
 </BrowserWindow>
-
-<br />
 ```
 
 This way, you can reuse content among multiple pages and avoid duplicating materials.
 
 :::caution
 
-The table of contents does not currently contain the imported Markdown headings. This is a technical limitation that we are trying to solve ([issue](https://github.com/facebook/docusaurus/issues/3915)).
+Currently, the table of contents does not contain the imported Markdown headings. This is a technical limitation that we are trying to solve ([issue](https://github.com/facebook/docusaurus/issues/3915)).
 
 :::
 

website/docs/guides/markdown-features/markdown-features-tabs.mdx

@@ -75,7 +75,6 @@ It is also possible to provide `values` and `defaultValue` props to `Tabs`:
     <TabItem value="banana">This is a banana 🍌</TabItem>
   </Tabs>
 </BrowserWindow>
-<br/>
 ```
 
 <details>
@@ -163,7 +162,6 @@ You may want choices of the same kind of tabs to sync with each other. For examp
     <TabItem value="mac" label="macOS">Use Command + V to paste.</TabItem>
   </Tabs>
 </BrowserWindow>
-<br/>
 ```
 
 For all tab groups that have the same `groupId`, the possible values do not need to be the same. If one tab group is chosen a value that does not exist in another tab group with the same `groupId`, the tab group with the missing value won't change its tab. You can see that from the following example. Try to select Linux, and the above tab groups don't change.

website/versioned_docs/version-2.0.0-beta.17/guides/markdown-features/markdown-features-react.mdx

@@ -365,8 +365,6 @@ import MyComponentSource from '!!raw-loader!@site/src/pages/examples/_myComponen
 <CodeBlock className="language-jsx">{MyComponentSource}</CodeBlock>
 
 </BrowserWindow>
-
-<br />
 ```
 
 See [using code blocks in JSX](./markdown-features-code-blocks.mdx#usage-in-jsx) for more details of the `<CodeBlock>` component.
@@ -407,8 +405,6 @@ import PartialExample from './_markdown-partial-example.mdx';
 <BrowserWindow>
   <PartialExample name="Sebastien" />
 </BrowserWindow>
-
-<br />
 ```
 
 This way, you can reuse content among multiple pages and avoid duplicating materials.

website/versioned_docs/version-2.0.0-beta.17/guides/markdown-features/markdown-features-tabs.mdx

@@ -75,7 +75,6 @@ It is also possible to provide `values` and `defaultValue` props to `Tabs`:
     <TabItem value="banana">This is a banana 🍌</TabItem>
   </Tabs>
 </BrowserWindow>
-<br/>
 ```
 
 <details>
@@ -115,7 +114,6 @@ It is also possible to provide `values` and `defaultValue` props to `Tabs`:
     <TabItem value="banana" label="Banana 2" default>This is a banana 🍌</TabItem>
   </Tabs>
 </BrowserWindow>
-<br/>
 ```
 
 </details>
@@ -164,7 +162,6 @@ You may want choices of the same kind of tabs to sync with each other. For examp
     <TabItem value="mac" label="macOS">Use Command + V to paste.</TabItem>
   </Tabs>
 </BrowserWindow>
-<br/>
 ```
 
 For all tab groups that have the same `groupId`, the possible values do not need to be the same. If one tab group is chosen a value that does not exist in another tab group with the same `groupId`, the tab group with the missing value won't change its tab. You can see that from the following example. Try to select Linux, and the above tab groups don't change.

website/versioned_docs/version-2.0.0-beta.18/guides/markdown-features/markdown-features-react.mdx

@@ -365,8 +365,6 @@ import MyComponentSource from '!!raw-loader!@site/src/pages/examples/_myComponen
 <CodeBlock language="jsx">{MyComponentSource}</CodeBlock>
 
 </BrowserWindow>
-
-<br />
 ```
 
 See [using code blocks in JSX](./markdown-features-code-blocks.mdx#usage-in-jsx) for more details of the `<CodeBlock>` component.
@@ -407,8 +405,6 @@ import PartialExample from './_markdown-partial-example.mdx';
 <BrowserWindow>
   <PartialExample name="Sebastien" />
 </BrowserWindow>
-
-<br />
 ```
 
 This way, you can reuse content among multiple pages and avoid duplicating materials.

website/versioned_docs/version-2.0.0-beta.18/guides/markdown-features/markdown-features-tabs.mdx

@@ -75,7 +75,6 @@ It is also possible to provide `values` and `defaultValue` props to `Tabs`:
     <TabItem value="banana">This is a banana 🍌</TabItem>
   </Tabs>
 </BrowserWindow>
-<br/>
 ```
 
 <details>
@@ -115,7 +114,6 @@ It is also possible to provide `values` and `defaultValue` props to `Tabs`:
     <TabItem value="banana" label="Banana 2" default>This is a banana 🍌</TabItem>
   </Tabs>
 </BrowserWindow>
-<br/>
 ```
 
 </details>
@@ -164,7 +162,6 @@ You may want choices of the same kind of tabs to sync with each other. For examp
     <TabItem value="mac" label="macOS">Use Command + V to paste.</TabItem>
   </Tabs>
 </BrowserWindow>
-<br/>
 ```
 
 For all tab groups that have the same `groupId`, the possible values do not need to be the same. If one tab group is chosen a value that does not exist in another tab group with the same `groupId`, the tab group with the missing value won't change its tab. You can see that from the following example. Try to select Linux, and the above tab groups don't change.