fix: remove illegal javadoc syntax (#147)

Author: kessplas

src/main/java/software/amazon/encryption/s3/S3AsyncEncryptionClient.java

@@ -101,7 +101,8 @@ public static Consumer<AwsRequestOverrideConfiguration.Builder> withAdditionalEn
  * size of the content is expected to be known up front. See {@link AsyncRequestBody} for specific details on
  * implementing this interface as well as links to precanned implementations for common scenarios like
  * uploading from a file.
- * @return A Java Future containing the result of the PutObject operation returned by the service.<br/>
+ * @return A Java Future containing the result of the PutObject operation returned by the service.
+ * <p>
  * The CompletableFuture returned by this method can be completed exceptionally with the following
  * exceptions.
  * <ul>
@@ -111,6 +112,7 @@ public static Consumer<AwsRequestOverrideConfiguration.Builder> withAdditionalEn
  * credentials, etc.</li>
  * <li>S3EncryptionClientException Base class for all encryption client specific exceptions.</li>
  * </ul>
+ * </p>
  */
  @Override
  public CompletableFuture<PutObjectResponse> putObject(PutObjectRequest putObjectRequest, AsyncRequestBody requestBody)
@@ -158,7 +160,8 @@ private CompletableFuture<PutObjectResponse> multipartPutObject(PutObjectRequest
  * The response transformer for processing the streaming response in a non-blocking manner. See
  * {@link AsyncResponseTransformer} for details on how this callback should be implemented and for links to
  * precanned implementations for common scenarios like downloading to a file.
- * @return A future to the transformed result of the AsyncResponseTransformer.<br/>
+ * @return A future to the transformed result of the AsyncResponseTransformer.
+ * <p>
  * The CompletableFuture returned by this method can be completed exceptionally with the following
  * exceptions.
  * <ul>
@@ -170,6 +173,7 @@ private CompletableFuture<PutObjectResponse> multipartPutObject(PutObjectRequest
  * credentials, etc.</li>
  * <li>S3EncryptionClientException Base class for all encryption client exceptions.</li>
  * </ul>
+ * </p>
  */
  @Override
  public <T> CompletableFuture<T> getObject(GetObjectRequest getObjectRequest,