Add doclint=none to suppress javadoc lint errors during site build

failOnError alone doesn't prevent the site plugin from failing when
javadoc exits with code 1 due to lint errors. doclint=none suppresses
reference-not-found and missing-param warnings at the javadoc tool level.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: edburns

pom.xml

@@ -193,6 +193,7 @@
                     <subpackages>com.github.copilot</subpackages>
                     <failOnError>false</failOnError>
                     <failOnWarnings>false</failOnWarnings>
+                    <doclint>none</doclint>
                 </configuration>
                 <reportSets>
                     <reportSet>