update tags and pipeline-tag for better discoverability (#3)

- update tags and pipeline-tag for better discoverability (fcbce7ba5e140d6e8b883570b5812e26bf140d59)


Co-authored-by: Linoy Tsaban <[email protected]>

README.md

@@ -5,6 +5,10 @@ language:
 - zh
 tags:
 - video generation
+- video-to-video editing
+- refernce-to-video
+
+pipeline_tag: image-to-video
 ---
 # Wan2.1