Fix next link on onboarding.markdown so it matches the navigation and doesn't skip over dashboards (#30226)

* Update onboarding.markdown to fix next page

* Getting started: fix order in side navigation, fix links

---------

Co-authored-by: c0ffeeca7 <k0ffeeka7@gmail.com>

source/_includes/asides/getting_started_navigation.html

@@ -4,8 +4,8 @@
     <ul class="divided sidebar-menu">
       <li>{% active_link /installation/ Installation %}</li>
       <li>{% active_link /getting-started/onboarding/ Onboarding %}</li>
-      <li>{% active_link /getting-started/onboarding_dashboard/ Edit the dashboard %}</li>
       <li>{% active_link /getting-started/concepts-terminology/ Concepts and terminology %}</li>
+      <li>{% active_link /getting-started/onboarding_dashboard/ Edit the dashboard %}</li>
       <li>{% active_link /getting-started/integration/ Integration %}</li>
       <li>{% active_link /getting-started/automation/ Automation %}</li>
       <li>

source/getting-started/concepts-terminology.markdown

@@ -70,4 +70,4 @@ Depending on your [installation type](/installation), you can install third part
 
 ![Add-ons](/images/getting-started/add-ons.png)
 
-{% include getting-started/next_step.html step="Adding Integrations In Home Assistant" link="/getting-started/integration/" %}
+{% include getting-started/next_step.html step="Edit the dashboard" link="/getting-started/onboarding_dashboard/" %}

source/getting-started/onboarding_dashboard.markdown

@@ -48,4 +48,4 @@ The procedure below is optional. The idea is to learn some basics on changing th
    - When you are done, in the top right corner, select **Done**.
 9. Congratulations! You have completed your first dashboard customization.
 
-{% include getting-started/next_step.html step="Concepts & Terminology" link="/getting-started/concepts-terminology/" %}
+{% include getting-started/next_step.html step="Integrations" link="/getting-started/integration/" %}