correcting typos and formatting on vm_virtualbox page

Signed-off-by: Leona <leonax.cook@intel.com>

source/vm-virtualbox.rst

@@ -3,39 +3,36 @@
 Using VirtualBox
 ################
 
-This section explains how to run Clear Linux inside
-VirtualBox_ environment.
+This section explains how to run Clear Linux inside a `VirtualBox`_
+environment.
 
 Download VirtualBox
 ===================
 
-Virtualbox is a hypervisor supported by *Oracle**, you can
-download it from its official site
-https://www.virtualbox.org/wiki/Downloads
-and select the operating system you are using,
-furthermore you can download its source code. At this point is very
-important to download **version 5.0 or grather**, this is in order to
-get support for :abbr:`AVX (Advanced Vector Extensions)` feature
-that is used in Clear Linux.
+VirtualBox is a hypervisor supported by *Oracle**. You can
+download it from the `official VirtualBox website`_ and select
+the operating system you are using.
+
+Download **version 5.0 or greater** to ensure support for
+the :abbr:`AVX (Advanced Vector Extensions)` needed to run
+Clear Linux.
 
 
 Create a virtual machine in VirtualBox
 ======================================
 
-1. Download the latest_ Clear linux live version (clear-XXXX-live.img.xz)
+#. Download the `latest`_ live version of Clear Linux (clear-XXXX-live.img.xz)
    from https://download.clearlinux.org/image/.
 
-2. Decompress Clear Linux image. Uncompressed image size is ~ **5GiB**.
+#. Decompress the downloaded image. Uncompressed image size is ~ **5GB**.
 
    - On Linux ::
 
        $ xz -d clear-XXXX-live.img.xz
 
-   - On Windows
+   - On Windows you can use `7zip`_.
 
-      You can use 7zip_.
-
-3. To convert Clear Linux raw image to :abbr:`VDI (VirtualBox Disk Image)`
+#. To convert a Clear Linux raw image to :abbr:`VDI (VirtualBox Disk Image)`
    format, you can use one of the following commands::
 
       $ VBoxManage convertfromraw clear-XXXX-live.img clear-XXXX-live.vdi --format VDI
@@ -46,34 +43,33 @@ Create a virtual machine in VirtualBox
 
 
    Note: Be sure you have Virtual box directory in your PATH (i.e.: on Windows
-   :file:`C:\\Program Files\\Oracle\\VirtualBox`)
+   :file:`C:\\Program Files\\Oracle\\VirtualBox`).
 
-4. Create virtual machine using the VirtualBox assistant:
+#. Create a virtual machine using the VirtualBox assistant:
 
    * Type: **Linux**
    * Version: **Linux 2.6 / 3.x / 4.x (64-bit)**
    * Attach the virtual disk created in the step number 3 as virtual hard disk file
 
-5. Once it is created, go to settings to enable **EFI support**
+#. After it is created, go to settings to enable **EFI support**
 
    * System -> Enable EFI (special OSes only)
 
+
 Run your new VM
 ===============
 
-Clear Linux comes with VirtualBox kernel modules in a bundle. You can install
-these modules using
-
-.. code:: bash
+Clear Linux can support kernel modules for VirtualBox. Install the bundle
+that supports these modules with::
 
   # swupd bundle-add virtualbox-guest
 
-In order to use the VirtualBox additions it's necessary to load vboxsf module
-
-.. code:: bash
+And to use the VirtualBox additions, load the ``vboxsf`` module::
 
   # modprobe vboxsf
 
+
+.. _official VirtualBox website: https://www.virtualbox.org/wiki/Downloads
 .. _VirtualBox: https://www.virtualbox.org/
 .. _latest: https://download.clearlinux.org/latest
 .. _7zip: http://www.7-zip.org/