NIFIREG-84 Corrected screenshot when creating group from selected users

This closes #72.

Signed-off-by: Bryan Bende <bbende@apache.org>
diff --git a/nifi-registry-docs/src/main/asciidoc/images/select_users_create_new_group.png b/nifi-registry-docs/src/main/asciidoc/images/select_users_create_new_group.png
index b49e9be..36f8dd6 100644
--- a/nifi-registry-docs/src/main/asciidoc/images/select_users_create_new_group.png
+++ b/nifi-registry-docs/src/main/asciidoc/images/select_users_create_new_group.png
Binary files differ