DOC-3497: Fix self-referencing canonical URLs on renamed legacy pages (#4126)

Add page-aliases to 14 v8 pages that were renamed from v5/v6, allowing
Antora to resolve the correct canonical URL for older versions.

Author: kemister85

modules/ROOT/pages/advanced-templates.adoc

@@ -1,5 +1,6 @@
 = Templates plugin
 :navtitle: Template
+:page-aliases: template.adoc
 :description: Create and edit complex templates in {productname} for use with {productname}.
 :description_short: Create templates.
 :keywords: plugin, template, templates, advtemplate.

modules/ROOT/pages/bootstrap-cloud.adoc

@@ -1,5 +1,6 @@
 = Using {productname} from the Tiny Cloud CDN with the Bootstrap framework
 :navtitle: Bootstrap
+:page-aliases: bootstrap.adoc
 :description: A guide on integrating TinyMCE from the Tiny Cloud into the Bootstrap framework.
 :keywords: integration, integrate, bootstrap
 :productSource: cloud

modules/ROOT/pages/cloud-quick-start.adoc

@@ -1,5 +1,6 @@
 = Quick start: {productname} from {cloudname}
 :navtitle: Quick start: Cloud
+:page-aliases: quick-start.adoc
 :description_short: Setup a basic {productname} {productmajorversion} editor using the {cloudname}.
 :description: Get an instance of {productname} {productmajorversion} up and running using the {cloudname}. Initialize the editor on a textarea element using its ID with tinymce.init and the selector option.
 :keywords: tinymce, script, textarea, selector, id, #mytextarea, tinymce.init, initialize, quick start

modules/ROOT/pages/copy-and-paste.adoc

@@ -1,5 +1,6 @@
 = Copy & paste options
 :navtitle: Copy and paste options
+:page-aliases: paste.adoc
 :description: TinyMCE copy and paste
 
 == {productname} PowerPaste plugin

modules/ROOT/pages/django-cloud.adoc

@@ -1,5 +1,6 @@
 = Using {productname} from the Tiny Cloud CDN with the Django framework
 :navtitle: Django
+:page-aliases: django.adoc
 :description: A guide on integrating TinyMCE from the Tiny Cloud into the Django framework.
 :keywords: integration, integrate, Django, django, django-tinymce, python
 :productSource: cloud

modules/ROOT/pages/exportpdf.adoc

@@ -1,6 +1,7 @@
 = {pluginname} plugin
 :plugincode: exportpdf
 :pluginname: Export to PDF
+:page-aliases: export.adoc
 :pluginfilename: export-to-pdf
 :navtitle: Export to PDF
 :description: The {pluginname} feature provides the ability to generate a PDF file directly from the editor.

modules/ROOT/pages/laravel-tiny-cloud.adoc

@@ -1,5 +1,6 @@
 = Using TinyMCE from the Tiny Cloud CDN with the Laravel framework
 :navtitle: Laravel
+:page-aliases: laravel.adoc
 :description: A guide on integrating TinyMCE from the Tiny Cloud into the Laravel framework.
 :keywords: integration, integrate, laravel, php, composer
 :productSource: cloud

modules/ROOT/pages/non-editable-content-options.adoc

@@ -1,5 +1,6 @@
 = Non-editable content
 :navtitle: Non-editable content
+:page-aliases: noneditable.adoc
 :description: Options for creating non-editable content.
 :keywords: noneditable, non-editable, editable, multi-root, multiroot
 

modules/ROOT/pages/rails-cloud.adoc

@@ -1,5 +1,6 @@
 = Using TinyMCE from the Tiny Cloud CDN with Ruby on Rails
 :navtitle: Ruby on Rails
+:page-aliases: rails.adoc
 :description: A guide on integrating TinyMCE from the Tiny Cloud into Ruby on Rails.
 :keywords: integration, integrate, ruby, rails
 :productSource: cloud

modules/ROOT/pages/react-cloud.adoc

@@ -1,5 +1,6 @@
 = Using TinyMCE from Tiny Cloud in React
 :navtitle: React
+:page-aliases: react.adoc
 :description: A guide on integrating TinyMCE from the Tiny Cloud into React.
 :keywords: integration, integrate, react, reactjs, vite, tinymce-react, tinymce
 :productSource: cloud