Updates an existing computer extension attribute by name

<computer_extension_attribute>
	<name>Battery Cycle Count</name>
	<description>Number of charge cycles logged on the current battery</description>
	<data_type>String</data_type>
	<input_type>
		<type>Text Field</type>
	</input_type>
	<inventory_display>General</inventory_display>
	<recon_display>Extension Attributes</recon_display>
</computer_extension_attribute>