patch 8.2.4770: cannot easily mix expression and heredoc

Problem:    Cannot easily mix expression and heredoc.
Solution:   Support  in heredoc. (Yegappan Lakshmanan, closes #10138)
diff --git a/src/version.c b/src/version.c
index 81e3824..90b0b12 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4770,
+/**/
     4769,
 /**/
     4768,