patch 9.1.0236: filetype: texlua files are not recognized

Problem:  filetype: texlua files are not recognized
Solution: Add '*.tlu' pattern for texlua files (Wu, Zhenyu)

Reference: https://github.com/TeX-Live/texdoc/tree/master/script

closes: #14357

Signed-off-by: Wu, Zhenyu <wuzhenyu@ustc.edu>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 439c4e7..ccc4e83 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    236,
+/**/
     235,
 /**/
     234,