patch 8.0.1733: incomplete testing for completion fix

Problem:    Incomplete testing for completion fix. (Lifepillar)
Solution:   Add a test with CTRL-P.
diff --git a/src/version.c b/src/version.c
index 5647b6e..2cdd9e3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -763,6 +763,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1733,
+/**/
     1732,
 /**/
     1731,