update readme

README.md

@@ -30,11 +30,11 @@ import towhee
 towhee.dc(['./demo_video.mp4']) \
     .video_decode.ffmpeg(sample_type='uniform_temporal_subsample', args={'num_samples': 12}) \
     .runas_op(func=lambda x: [y for y in x]) \
-    .drl(base_encoder='clip_vit_b32', modality='video', device='cpu') \
+    .video_text_embedding.drl(base_encoder='clip_vit_b32', modality='video', device='cpu') \
     .show()
 
 towhee.dc(['kids feeding and playing with the horse']) \
-    .drl(base_encoder='clip_vit_b32', modality='text', device='cpu') \
+    .video_text_embedding.drl(base_encoder='clip_vit_b32', modality='text', device='cpu') \
     .show()
 ```
 
@@ -49,11 +49,11 @@ import towhee
 towhee.dc['path'](['./demo_video.mp4']) \
         .video_decode.ffmpeg['path', 'frames'](sample_type='uniform_temporal_subsample', args={'num_samples': 12}) \
         .runas_op['frames', 'frames'](func=lambda x: [y for y in x]) \
-        .drl['frames', 'vec'](base_encoder='clip_vit_b32', modality='video', device='cpu') \
+        .video_text_embedding.drl['frames', 'vec'](base_encoder='clip_vit_b32', modality='video', device='cpu') \
         .show(formatter={'path': 'video_path'})
 
 towhee.dc['text'](['kids feeding and playing with the horse']) \
-      .drl['text','vec'](base_encoder='clip_vit_b32', modality='text', device='cpu') \
+      .video_text_embedding.drl['text','vec'](base_encoder='clip_vit_b32', modality='text', device='cpu') \
       .select['text', 'vec']() \
       .show()
 ```