patch 8.1.0955: matchit autoload directory not in installer

Problem:    Matchit autoload directory not in installer. (Chris Morgan)
Solution:   Adjust the NSIS script. (Christian Brabandt, closes #4006)
diff --git a/src/version.c b/src/version.c
index 6fe4c9e..089c134 100644
--- a/src/version.c
+++ b/src/version.c
@@ -780,6 +780,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    955,
+/**/
     954,
 /**/
     953,