build: Minor - fix comments referring to old tools/ directory.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
diff --git a/scripts/acpi_extract_preprocess.py b/scripts/acpi_extract_preprocess.py
index 6ef7df0..2698118 100755
--- a/scripts/acpi_extract_preprocess.py
+++ b/scripts/acpi_extract_preprocess.py
@@ -6,7 +6,7 @@
 # Read a preprocessed ASL listing and put each ACPI_EXTRACT
 # directive in a comment, to make iasl skip it.
 # We also put each directive on a new line, the machinery
-# in tools/acpi_extract.py requires this.
+# in scripts/acpi_extract.py requires this.
 
 import re
 import sys