Drop link-type attribute and simplify prefix for ignored parents

specification/data-link-semantic-conventions.md

@@ -5,30 +5,25 @@ This document is about standard attributes for
 
 ## Document conventions
 
-Attributes are divided into groups, depending on the link type. Attributes in
-each group are prefixed with the link type and a dot.
+Attributes are divided into groups, describing certain characteristics of a
+link. Attributes in each group start with a specified prefix and a dot.
 
-Certain attribute groups in this document have a **Required** column. If an
-attribute in the group that is described by the link type is marked as required
-then the attribute MUST be present in the Link. If the **Required** column is
-missing, then it is assumed that all the attributes in the group are optional.
+Attribute groups in this document have a **Required** column. If a link has at
+least one attribute from the group, then it MUST also contain all the required
+attributes of the group.
 
 ## Link types
 
-A link may be of a certain type and this can be described by the `link.type`
-attribute. The value of the attribute MUST be a string. Each type of the link
-below will provide a description with the value of the attribute.
-
 * [Ignored parent](#ignored-parent)
 
 ### Ignored parent
 
-**Link type:** `ignored-parent`
+**Prefix:** parent
 
 **Description:** These attributes are used to denote a span context that was
 ignored during a span creation as a parent and thus became only linked to the
 span.
 
 | Attribute | Description | Example | Required? |
 |---|---|---|---|
-| ignored-parent.kind | Kind of ignored span context. It MUST be either "local" or "remote". "local" denotes a span context that was a part of a current span at the time of a creation of the link. "remote" denotes a span context that was a part of remote span at the time of a creation of the link. | "local" | Yes |
+| parent.kind | Kind of ignored span context. It MUST be either "local" or "remote". "local" denotes a span context that was a part of a current span at the time of a creation of the link. "remote" denotes a span context that was a part of remote span at the time of a creation of the link. | "local" | Yes |