Update concatenation method in create_general_exposures function

- Modified the dataframe concatenation to explicitly specify the axis parameter, enhancing clarity and preventing potential issues in future modifications.
- Maintained existing functionality while refining the data processing logic for improved reliability.

global_func/create_general_exposures.py

@@ -39,6 +39,6 @@ def create_general_exposures(df: pd.DataFrame, entrants: list = None):
         if len(general_exposures) == 0:
             general_exposures = general_row
         else:
-            general_exposures = pd.concat([general_exposures, general_frame], ignore_index = True)
+            general_exposures = pd.concat([general_exposures, general_frame], ignore_index = True, axis = 0)
 
     return general_exposures