style(help): fix ditamap for Ivy
<topicref href="properties/detectors/go.md" format="markdown"/>
<topicref href="properties/detectors/gradle.md" format="markdown"/>
<topicref href="properties/detectors/hex.md" format="markdown"/>
- <topicref href="properties/detectors/ivy.md" format="markdown"/>
<topicref href="properties/detectors/lerna.md" format="markdown"/>
<topicref href="properties/detectors/maven.md" format="markdown"/>
<topicref href="properties/detectors/npm.md" format="markdown"/>
<topicref href="packagemgrs/golang.md" format="markdown"/>
<topicref href="packagemgrs/gradle.md" format="markdown"/>
<topicref href="packagemgrs/hex.md" format="markdown"/>
+ <topicref href="packagemgrs/ivy.md" format="markdown"/>
<topicref href="packagemgrs/lerna.md" format="markdown"/>
<topicref href="packagemgrs/maven.md" format="markdown"/>
<topicref href="packagemgrs/npm.md" format="markdown"/>
