🧐 fix : evaluation command

# |<----  Using a Maximum Of 50 Characters  ---->|


# Explain why this change is being made
# |<----   Try To Limit Each Line to a Maximum Of 72 Characters   ---->|

# Provide links or keys to any relevant tickets, articles or other resources
# Example: Github issue #23

# --- COMMIT END ---
# Type can be 
#    🔬 exp	 (new experiment)
#    🚀 feat     (new feature)
#    🧐 fix      (bug fix)
#    🏗️ refactor (refactoring production code)
#    🍻 style    (formatting, missing semi colons, etc; no code change)
#    📝 docs     (changes to documentation)
#    ✅ test     (adding or refactoring tests; no production code change)
#    💚 chore    (updating grunt tasks etc; no production code change)
# --------------------

README.md

@@ -47,7 +47,7 @@ According to MMseg: https://github.com/open-mmlab/mmsegmentation/blob/master/doc
 ## Evaluation
 
 ```bash
-python tools/test.py {config.py} {checkpoint.pth}
+python tools/test.py {config.py} {checkpoint.pth} --eval mIoU
 ```
 
 ## Results and models