minor grammar fix and rewrapping

website/source/docs/builders/virtualbox-iso.html.md.erb

@@ -308,9 +308,9 @@ builder.
 -   `virtualbox_version_file` (string) - The path within the virtual machine to
     upload a file that contains the VirtualBox version that was used to create
     the machine. This information can be useful for provisioning. By default
-    this is `.vbox_version`, which will generally be upload it into the
-    home directory. Set to an empty string to skip uploading this file, which
-    can be useful when using the `none` communicator.
+    this is `.vbox_version`, which will generally be uploaded into the home
+    directory. Set to an empty string to skip uploading this file, which can be
+    useful when using the `none` communicator.
 
 -   `vm_name` (string) - This is the name of the OVF file for the new virtual
     machine, without the file extension. By default this is `packer-BUILDNAME`,

website/source/docs/builders/virtualbox-ovf.html.md.erb

@@ -277,9 +277,9 @@ builder.
 -   `virtualbox_version_file` (string) - The path within the virtual machine to
     upload a file that contains the VirtualBox version that was used to create
     the machine. This information can be useful for provisioning. By default
-    this is `.vbox_version`, which will generally be upload it into the
-    home directory. Set to an empty string to skip uploading this file, which
-    can be useful when using the `none` communicator.
+    this is `.vbox_version`, which will generally be uploaded into the home
+    directory. Set to an empty string to skip uploading this file, which can be
+    useful when using the `none` communicator.
 
 -   `vm_name` (string) - This is the name of the virtual machine when it is
     imported as well as the name of the OVF file when the virtual machine