Update warning emojis (ultralytics#8678)

Author: glenn-jocher

utils/general.py

@@ -474,7 +474,7 @@ def check_dataset(data, autodownload=True):
     for k in 'train', 'val', 'nc':
         assert k in data, emojis(f"data.yaml '{k}:' field missing ❌")
     if 'names' not in data:
-        LOGGER.warning(emojis("data.yaml 'names:' field missing ⚠, assigning default names 'class0', 'class1', etc."))
+        LOGGER.warning(emojis("data.yaml 'names:' field missing ⚠️, assigning default names 'class0', 'class1', etc."))
         data['names'] = [f'class{i}' for i in range(data['nc'])]  # default names
 
     # Resolve paths
@@ -490,7 +490,7 @@ def check_dataset(data, autodownload=True):
     if val:
         val = [Path(x).resolve() for x in (val if isinstance(val, list) else [val])]  # val path
         if not all(x.exists() for x in val):
-            LOGGER.info(emojis('\nDataset not found ⚠, missing paths %s' % [str(x) for x in val if not x.exists()]))
+            LOGGER.info(emojis('\nDataset not found ⚠️, missing paths %s' % [str(x) for x in val if not x.exists()]))
             if not s or not autodownload:
                 raise Exception(emojis('Dataset not found ❌'))
             t = time.time()