Custom scripts returning String from getHelpUrl() not working

2020-09-29 11:44:13 [http-nio-8080-exec-10] WARN  c.o.s.r.r.CannedScriptDescriptionFactory - Failed to instantiate com.onresolve.scriptrunner.canned.bitbucket.hooks.TrustedCommitAuthors, Cannot cast object 'bitbucket/PreReceiveHooks.html#_enforce_trusted_commit_authors' with class 'java.lang.String' to class 'com.onresolve.scriptrunner.canned.docs.DocLink'
org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object 'bitbucket/PreReceiveHooks.html#_enforce_trusted_commit_authors' with class 'java.lang.String' to class 'com.onresolve.scriptrunner.canned.docs.DocLink'
	at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.continueCastOnSAM(DefaultTypeTransformation.java:415)
	at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.continueCastOnNumber(DefaultTypeTransformation.java:329)
	at org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation.castToType(DefaultTypeTransformation.java:243)
	at org.codehaus.groovy.runtime.DefaultGroovyMethods.asType(DefaultGroovyMethods.java:17144)
	at org.codehaus.groovy.runtime.StringGroovyMethods.asType(StringGroovyMethods.java:197)
	at org.codehaus.groovy.runtime.dgm$1106.doMethodInvoke(Unknown Source)
	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1217)
	at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1041)
	at org.codehaus.groovy.runtime.InvokerHelper.invokePojoMethod(InvokerHelper.java:999)
	at org.codehaus.groovy.runtime.InvokerHelper.invokeMethod(InvokerHelper.java:990)
	at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.invokeMethodN(ScriptBytecodeAdapter.java:180)
	at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.asType(ScriptBytecodeAdapter.java:603)
	at com.onresolve.scriptrunner.runner.rest.CannedScriptDescriptionFactory.describeScript(CannedScriptDescriptionFactory.groovy:99)