Update docs/source/faqs.md

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: QwertyJack

docs/source/faqs.md

@@ -57,6 +57,7 @@ gzip vllm-ascend-$TAG.tar
 ```bash
 # Transfer the tar/tar.gz file to the air-gapped environment first
 # Then load the image (docker load handles both .tar and .tar.gz)
+TAG=v0.7.3rc2 # Replace with the tag from the exported file
 docker load -i vllm-ascend-$TAG.tar.gz
 
 # Verify the image is loaded