fix: case of default value for 'preauth.manifestHeader' property

uw-spring-security-core/src/main/java/edu/wisc/uwss/preauth/PreauthenticatedUserDetailsAttributeMapper.java

@@ -323,7 +323,7 @@ public interface PreauthenticatedUserDetailsAttributeMapper {
     /**
      * @param manifestHeader the manifestHeader to set
      */
-    @Value("${preauth.manifestHeader:ismemberof}")
+    @Value("${preauth.manifestHeader:isMemberOf}")
     public void setManifestHeader(String manifestHeader) {
       this.manifestHeader = manifestHeader;
     }