Fixup: Config file name in code style script

Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/scripts/code_style.py b/scripts/code_style.py
index 5884848..ebf0cd4 100755
--- a/scripts/code_style.py
+++ b/scripts/code_style.py
@@ -27,7 +27,7 @@
 from typing import List
 
 UNCRUSTIFY_SUPPORTED_VERSION = "0.75.1"
-CONFIG_FILE = "codestyle.cfg"
+CONFIG_FILE = ".uncrustify.cfg"
 UNCRUSTIFY_EXE = "uncrustify"
 UNCRUSTIFY_ARGS = ["-c", CONFIG_FILE]
 STDOUT_UTF8 = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8')