feat: Options method renamed in javadoc

Author: shobhitsg

google-cloud-spanner/src/main/java/com/google/cloud/spanner/DatabaseClient.java

@@ -415,7 +415,7 @@ ServerStream<BatchWriteResponse> batchWriteAtLeastOnce(
    *       applied to any other requests on the transaction.
    *   <li>{@link Options#commitStats()}: Request that the server includes commit statistics in the
    *       {@link CommitResponse}.
-   *   <li>{@link Options#isolationLevelOption(IsolationLevel)}: The isolation level for the
+   *   <li>{@link Options#isolationLevel(IsolationLevel)}: The isolation level for the
    *       transaction
    * </ul>
    */
@@ -457,7 +457,7 @@ ServerStream<BatchWriteResponse> batchWriteAtLeastOnce(
    *       applied to any other requests on the transaction.
    *   <li>{@link Options#commitStats()}: Request that the server includes commit statistics in the
    *       {@link CommitResponse}.
-   *   <li>{@link Options#isolationLevelOption(IsolationLevel)}: The isolation level for the
+   *   <li>{@link Options#isolationLevel(IsolationLevel)}: The isolation level for the
    *       transaction
    * </ul>
    */
@@ -499,7 +499,7 @@ ServerStream<BatchWriteResponse> batchWriteAtLeastOnce(
    *       applied to any other requests on the transaction.
    *   <li>{@link Options#commitStats()}: Request that the server includes commit statistics in the
    *       {@link CommitResponse}.
-   *   <li>{@link Options#isolationLevelOption(IsolationLevel)}: The isolation level for the
+   *   <li>{@link Options#isolationLevel(IsolationLevel)}: The isolation level for the
    *       transaction
    * </ul>
    */
@@ -555,7 +555,7 @@ ServerStream<BatchWriteResponse> batchWriteAtLeastOnce(
    *       applied to any other requests on the transaction.
    *   <li>{@link Options#commitStats()}: Request that the server includes commit statistics in the
    *       {@link CommitResponse}.
-   *   <li>{@link Options#isolationLevelOption(IsolationLevel)}: The isolation level for the
+   *   <li>{@link Options#isolationLevel(IsolationLevel)}: The isolation level for the
    *       transaction
    * </ul>
    */