New change request - C driver API ref typo

[izmalk]

Description of issue

Retrieves the type which this Relation belongs to.

https://typedb.com/docs/drivers/c/api-reference#_attribute_get_value is for the value, not the type.
Also, it's for attributes.

Affected docs article

https://typedb.com/docs/drivers/c/api-reference#_methods__concept__attribute

Suggested solution

Retrieves the value of this Attribute.