chore: some lint fixes [(#3750)](#3750)

Author: Takashi Matsuo

texttospeech/snippets/ssml_addresses.py

@@ -14,9 +14,10 @@
 
 
 # [START tts_ssml_address_imports]
+import html
+
 from google.cloud import texttospeech
 
-import html
 # [END tts_ssml_address_imports]
 
 

texttospeech/snippets/ssml_addresses_test.py

@@ -11,11 +11,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+import os
 
-from ssml_addresses import text_to_ssml
 from ssml_addresses import ssml_to_audio
-
-import os
+from ssml_addresses import text_to_ssml
 
 
 def test_text_to_ssml(capsys):