Fix family variable being nil in docker upgrade script notices

Remove `assign family = include.family` from CE and PE
new-docker-upgrade-steps.md — the parent doesn't pass family,
so the assignment overwrote the page-global with nil, causing
"version .0+" instead of "version 4.3.0+".

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

_includes/docs/pe/user-guide/install/new-docker-upgrade-steps.md

@@ -1,6 +1,5 @@
 {% assign current_version = include.version %}
 {% assign previous_version = include.previous_version %}
-{%- assign family = include.family -%}
 
 {% capture update_note %}
 {% assign base_version_parts = base_version | split: "." %}

_includes/docs/user-guide/install/new-docker-upgrade-steps.md

@@ -1,6 +1,5 @@
 {% assign current_version = include.version %}
 {% assign previous_version = include.previous_version %}
-{%- assign family = include.family -%}
 
 {% capture update_note %}
 {% assign base_version_parts = base_version | split: "." %}