patch 8.1.0247: Python: error message for failing import is incorrect

Problem:    Python: error message for failing import is incorrect.
Solution:   Adjust how modules are loaded. (Ozaki Kiichi, closes #3162)
diff --git a/src/version.c b/src/version.c
index a3539f0..95a2e5b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    247,
+/**/
     246,
 /**/
     245,