patch 8.1.0117: URL in install program still points to SourceForge

Problem:    URL in install program still points to SourceForge.
Solution:   Change it to www.vim.org. (closes #3100)
diff --git a/src/version.c b/src/version.c
index ffa6bf3..88a6541 100644
--- a/src/version.c
+++ b/src/version.c
@@ -790,6 +790,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    117,
+/**/
     116,
 /**/
     115,