patch 8.0.1754: ex_helpgrep() is too long

Problem:    ex_helpgrep() is too long.
Solution:   Refactor the function. (Yegappan Lakshmanan, closes #2766)
diff --git a/src/version.c b/src/version.c
index 6a4c97d..abf4910 100644
--- a/src/version.c
+++ b/src/version.c
@@ -762,6 +762,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1754,
+/**/
     1753,
 /**/
     1752,