patch 8.0.1301: generated license file for NSIS has a modeline

Problem:    Generated license file for NSIS has a modeline.
Solution:   Adjust the pattern for sed. (Ken Takata)
diff --git a/src/version.c b/src/version.c
index 2a50a1b..cf62d59 100644
--- a/src/version.c
+++ b/src/version.c
@@ -767,6 +767,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1301,
+/**/
     1300,
 /**/
     1299,