You can refer to the goal documentation to discover the different configuration options for this plugin.
In your pom.xml, insert this segment:
<project>
...
<build>
...
</build>
...
<reporting>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>taglist-maven-plugin</artifactId>
<version>2.2</version>
</plugin>
</plugins>
</reporting>
...
</project>
The report will be generated when executing the site life cycle phase, like this:
mvn site
You can easily customise the tags you want to look for. For instance:
<project>
...
<build>
...
</build>
...
<reporting>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>taglist-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<tags>
<tag>TODO</tag>
<tag>FIXME</tag>
<tag>@todo</tag>
<tag>@deprecated</tag>
</tags>
</configuration>
</plugin>
</plugins>
</reporting>
...
</project>