Update rec_multi_head.py

ppocr/modeling/heads/rec_multi_head.py

@@ -10,7 +10,7 @@
 # distributed under the License is distributed on an "AS IS" BASIS,
 # 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.
+# limitations under the License. 
 
 from __future__ import absolute_import
 from __future__ import division