Merge pull request magento-commerce/devdocs#2776 from magento-devdocs/2.3-eol-update

Update 2.3 EOL date and restore 2.3 link to Upgrade Guide

Author: jeff-matthews

src/_data/main-nav.yml

@@ -67,6 +67,11 @@
 
     - label: Software Update Guide
       url: https://experienceleague.adobe.com/docs/commerce-operations/upgrade-guide/overview.html
+      exclude_versions: ["2.3"]
+
+    - label: Software Update Guide
+      url: /comp-mgr/bk-compman-upgrade-guide.html
+      exclude_versions: ["2.4"]
 
     - label: Configuration Guide
       url: /config-guide/bk-config-guide.html

src/_includes/layout/page-header.html

@@ -36,7 +36,7 @@
 
   {% if page.url contains "guides/v2.3/" %}
   <div class="bs-callout-warning">
-    PHP 7.3 reached end of support in December 2021 and {{site.data.var.ee}} 2.3.x reaches end of support in April 2022. You may want to consider planning your upgrade now to {{site.data.var.ee}} 2.4.x and PHP 7.4.x to help maintain PCI compliance.
+    PHP 7.3 reached end of support in December 2021 and {{site.data.var.ee}} 2.3.x reaches end of support in September 2022. You may want to consider planning your upgrade now to {{site.data.var.ee}} 2.4.x and PHP 7.4.x to help maintain PCI compliance.
   </div>
   {% endif %}
 

src/guides/v2.3/comp-mgr/patching.md

@@ -103,4 +103,4 @@ To apply a patch to a {{site.data.var.ece}} project, see [Apply patches][].
 [Apply patches]:{{ site.baseurl }}/cloud/project/project-patch.html
 [Command line]:https://experienceleague.adobe.com/docs/commerce-operations/upgrade-guide/patches/apply.html
 [Composer]:https://experienceleague.adobe.com/docs/commerce-operations/upgrade-guide/patches/apply.html
-[Quality Patches Tool]: {{ page.baseurl }}/comp-mgr/patching/mqp.html
+[Quality Patches Tool]:{{ site.baseurl }}/quality-patches/tool.html

src/guides/v2.3/index.html

@@ -3,7 +3,7 @@
 ---
 
 <section class="home-features">
-  <div class="bs-callout-warning">PHP 7.3 reached end of support in December 2021 and {{site.data.var.ee}} 2.3.x reaches end of support in April 2022. You may want to consider planning your upgrade now to {{site.data.var.ee}} 2.4.x and PHP 7.4.x to help maintain PCI compliance.</div>
+  <div class="bs-callout-warning">PHP 7.3 reached end of support in December 2021 and {{site.data.var.ee}} 2.3.x reaches end of support in September 2022. You may want to consider planning your upgrade now to {{site.data.var.ee}} 2.4.x and PHP 7.4.x to help maintain PCI compliance.</div>
   <div class="container">
 
     <div class="feature">