Rename QS8 generator templates

PiperOrigin-RevId: 334260510
diff --git a/src/qs8-igemm/gen/4x4c2-minmax-xop-ld128.c b/src/qs8-igemm/gen/4x4c2-minmax-xop-ld128.c
index e336411..b1b6880 100644
--- a/src/qs8-igemm/gen/4x4c2-minmax-xop-ld128.c
+++ b/src/qs8-igemm/gen/4x4c2-minmax-xop-ld128.c
@@ -1,5 +1,5 @@
 // Auto-generated file. Do not edit!
-//   Template: src/qs8-igemm/MRx4c2-minmax-sse.c.in
+//   Template: src/qs8-igemm/MRx4c2-sse.c.in
 //   Generator: tools/xngen
 //
 // Copyright 2020 Google LLC