scripts: Update comments in helper generator

Change-Id: Ie4171bb18ff499e54bdbd8ff7237e7026e6cf3e9
diff --git a/scripts/helper_file_generator.py b/scripts/helper_file_generator.py
index f4b230e..1c958a6 100644
--- a/scripts/helper_file_generator.py
+++ b/scripts/helper_file_generator.py
@@ -68,7 +68,7 @@
 #
 # HelperFileOutputGenerator - subclass of OutputGenerator. Outputs Vulkan helper files
 class HelperFileOutputGenerator(OutputGenerator):
-    """Generate Windows def file based on XML element attributes"""
+    """Generate helper file based on XML element attributes"""
     def __init__(self,
                  errFile = sys.stderr,
                  warnFile = sys.stderr,
@@ -130,7 +130,7 @@
         copyright += ' ****************************************************************************/\n'
         write(copyright, file=self.outFile)
     #
-    # Write generate and write def file content to output file
+    # Write generated file content to output file
     def endFile(self):
         dest_file = ''
         dest_file += self.OutputDestFile()