Remove unexpected spaces and HTML tag in code

There are unexpected HTML tag between "username" and "fork name", making the URLs not match what is displayed when running the commands.
There also is an unexpected HTML closing tag `</em>` which is not opened previously.

```shell
  $ git remote -v
  > origin    https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/ YOUR_FORK</em>.git (fetch)
  > origin    https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/YOUR_FORK.git (push)
  > upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ ORIGINAL_REPOSITORY.git (fetch)
  > upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ ORIGINAL_REPOSITORY.git (push)
```

should be : 

```shell
  $ git remote -v
  > origin    https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/YOUR_FORK.git (fetch)
  > origin    https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/YOUR_FORK.git (push)
  > upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git (fetch)
  > upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git (push)
  ```

Author: MTindev

content/get-started/quickstart/fork-a-repo.md

@@ -175,10 +175,10 @@ When you fork a project in order to propose changes to the original repository,
 7. To verify the new upstream repository you have specified for your fork, type `git remote -v` again. You should see the URL for your fork as `origin`, and the URL for the original repository as `upstream`.
   ```shell
   $ git remote -v
-  > origin    https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/ YOUR_FORK</em>.git (fetch)
+  > origin    https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/YOUR_FORK.git (fetch)
   > origin    https://{% data variables.command_line.codeblock %}/YOUR_USERNAME/YOUR_FORK.git (push)
-  > upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ ORIGINAL_REPOSITORY.git (fetch)
-  > upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ ORIGINAL_REPOSITORY.git (push)
+  > upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git (fetch)
+  > upstream  https://{% data variables.command_line.codeblock %}/ORIGINAL_OWNER/ORIGINAL_REPOSITORY.git (push)
   ```
 
 Now, you can keep your fork synced with the upstream repository with a few Git commands. For more information, see "[Syncing a fork](/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork)."