fixed visuliaztion typos (#920)

* visuliaztion typos

* fix to visualization

* fixed lint errors by pre-commit

demo/mono_det_demo.py

@@ -18,11 +18,13 @@ def main():
     parser.add_argument(
         '--out-dir', type=str, default='demo', help='dir to save results')
     parser.add_argument(
-        '--show', action='store_true', help='show online visuliaztion results')
+        '--show',
+        action='store_true',
+        help='show online visualization results')
     parser.add_argument(
         '--snapshot',
         action='store_true',
-        help='whether to save online visuliaztion results')
+        help='whether to save online visualization results')
     args = parser.parse_args()
 
     # build the model from a config file and a checkpoint file

demo/multi_modality_demo.py

@@ -19,11 +19,13 @@ def main():
     parser.add_argument(
         '--out-dir', type=str, default='demo', help='dir to save results')
     parser.add_argument(
-        '--show', action='store_true', help='show online visuliaztion results')
+        '--show',
+        action='store_true',
+        help='show online visualization results')
     parser.add_argument(
         '--snapshot',
         action='store_true',
-        help='whether to save online visuliaztion results')
+        help='whether to save online visualization results')
     args = parser.parse_args()
 
     # build the model from a config file and a checkpoint file

demo/pc_seg_demo.py

@@ -14,11 +14,13 @@ def main():
     parser.add_argument(
         '--out-dir', type=str, default='demo', help='dir to save results')
     parser.add_argument(
-        '--show', action='store_true', help='show online visuliaztion results')
+        '--show',
+        action='store_true',
+        help='show online visualization results')
     parser.add_argument(
         '--snapshot',
         action='store_true',
-        help='whether to save online visuliaztion results')
+        help='whether to save online visualization results')
     args = parser.parse_args()
 
     # build the model from a config file and a checkpoint file

demo/pcd_demo.py

@@ -16,11 +16,13 @@ def main():
     parser.add_argument(
         '--out-dir', type=str, default='demo', help='dir to save results')
     parser.add_argument(
-        '--show', action='store_true', help='show online visuliaztion results')
+        '--show',
+        action='store_true',
+        help='show online visualization results')
     parser.add_argument(
         '--snapshot',
         action='store_true',
-        help='whether to save online visuliaztion results')
+        help='whether to save online visualization results')
     args = parser.parse_args()
 
     # build the model from a config file and a checkpoint file