Fix javadoc warnings

Author: gmfeinberg

driver/src/main/java/oracle/nosql/driver/NoSQLHandle.java

@@ -337,7 +337,7 @@ public interface NoSQLHandle extends AutoCloseable {
      * Note: Since iterators might use resources until they reach the end, it
      * is necessary to close the QueryIterableResult or use the
      * try-with-resources statement:
-     * <p><pre>
+     * <pre>
      *    QueryRequest qreq = new QueryRequest()
      *        .setStatement("select * from MyTable");
      *

driver/src/main/java/oracle/nosql/driver/iam/InstancePrincipalsProvider.java

@@ -68,6 +68,7 @@ public InstancePrincipalsProvider(SecurityTokenSupplier tokenSupplier,
 
     /**
      * @hidden
+     * @param config the config
      */
     public void prepare(NoSQLHandleConfig config) {
         tokenSupplier.prepare(config);

driver/src/main/java/oracle/nosql/driver/ops/ReadRequest.java

@@ -23,6 +23,7 @@ protected ReadRequest() {}
 
     /**
      * @hidden
+     * @return the Consistency
      */
     public Consistency getConsistencyInternal() {
         return consistency;