fix: rename parameter 'funcs' to 'functions' to fix a bug (#47)

Co-authored-by: Lodewic van Twillert <lodewic.van.twillert@rabobank.nl>

Author: Lodewic

emm/preprocessing/pandas_preprocessor.py

@@ -116,8 +116,8 @@ def _spark_apply_steps(
             sc = self.spark_session.sparkContext
             rdd = sc.parallelize(X_chunks, len(X_chunks))
 
-            def calc(chunk, funcs):
-                for func in funcs:
+            def calc(chunk, functions):
+                for func in functions:
                     chunk = func(chunk)
                 return chunk.index.values, chunk.values