gitignore: added vim session file

chatmastermind/message.py

@@ -173,9 +173,9 @@ class Message():
             * Question
             * Answer.txt_header
         For '.yaml':
-            * question: single or multiline string
-            * answer: single or multiline string
-            * tags: list of strings
+            * Question.yaml_key: single or multiline string
+            * Answer.yaml_key: single or multiline string
+            * Message.tags_yaml_key: list of strings
         """
         if not file_path.exists():
             raise MessageError(f"Message file '{file_path}' does not exist")
@@ -212,7 +212,7 @@ class Message():
         For '.yaml':
             * Question.yaml_key: single or multiline string
             * Answer.yaml_key: single or multiline string
-            * tags: list of strings
+            * Message.tags_yaml_key: list of strings
         """
         if file_path:
             self.file_path = file_path