patch 8.2.3214: MS-Windows: passing /D does not set the install location

Problem:    MS-Windows: passing /D does not set the install location.
Solution:   Adjust how the installer uses $VIM. Update the documentation.
            (Christian Brabandt, closes #8605)
diff --git a/src/version.c b/src/version.c
index d73bddb..a331760 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3214,
+/**/
     3213,
 /**/
     3212,