fix enum pass as value

src/axolotl/prompt_strategies/alpaca_chat.py

@@ -4,7 +4,7 @@ from axolotl.prompters import AlpacaPrompter, PromptStyle
 
 def load(tokenizer, cfg):
     return AlpacaPromptTokenizingStrategy(
-        AlpacaPrompter(PromptStyle.chat), tokenizer, cfg.train_on_inputs, cfg.sequence_len
+        AlpacaPrompter(PromptStyle.chat.value), tokenizer, cfg.train_on_inputs, cfg.sequence_len
     )
 
 
@@ -19,5 +19,5 @@ class AlpacaQAPromptTokenizingStrategy(InstructionPromptTokenizingStrategy):
 
 def load_qa(tokenizer, cfg):
     return AlpacaQAPromptTokenizingStrategy(
-        AlpacaPrompter(PromptStyle.chat), tokenizer, cfg.train_on_inputs, cfg.sequence_len
+        AlpacaPrompter(PromptStyle.chat.value), tokenizer, cfg.train_on_inputs, cfg.sequence_len
     )