patch 8.2.3219: :find searches non-existing directories

Problem:    :find searches non-existing directories.
Solution:   Check the path is not "..".  Update help. (Christian Brabandt,
            closes #8612, closes #8533)
diff --git a/src/version.c b/src/version.c
index 9b334e6..ac5989f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -756,6 +756,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3219,
+/**/
     3218,
 /**/
     3217,