fix(copy): qualify version upgrades as in-version only; major migration is a separate quote

The four 'version upgrades are run for you' lines (black-friday, hosting-offers,
hosting-2027 body + table row, llms.txt) and their JSON-LD descriptions now say
updates and in-version upgrades are included, and name a major-version migration
as a separate, quoted service. terms.html: migration = separate service, quoted
separately; release list no longer reads stale (names Odoo 20 as current).
No offer, price, page structure or ad change.

odoo-black-friday/index.html

@@ -402,7 +402,7 @@
           {
             "@type": "Product",
             "name": "On the Rise — managed Odoo Community hosting",
-            "description": "Managed Odoo Community hosting on the On the Rise plan: the server, backups, SSL certificate and version upgrades are run for you on one yearly price, with no per-user licence.",
+            "description": "Managed Odoo Community hosting on the On the Rise plan: the server, backups and SSL certificate are run for you and your Odoo is kept current within its version, on one yearly price with no per-user licence. Moving to a new major version is a migration and is quoted separately.",
             "brand": { "@id": "https://odoo4projects.com/#organization" },
             "offers": [
               {
@@ -546,7 +546,7 @@
           <div class="bf-panel">
             <p class="bf-teaser">Your whole business in one system. The Black Friday price is right here — no code to hunt for.</p>
             <p class="bf-price"><strong>$295</strong> for your first year — then <strong>$395</strong> a year after that.</p>
-            <p class="bf-included">One price a year, no per-user licence, no setup fee. We run the server, the backups, your certificate and the version upgrades for you.</p>
+            <p class="bf-included">One price a year, no per-user licence, no setup fee. We run the server, the backups and your certificate, and we keep your Odoo current within its version. Moving to a new major version is a migration, and we quote that separately.</p>
             <!-- mechanism string, used verbatim — see §3. The code is the offer surface: it stays out
                  of meta, alt text, structured data and build comments. -->
             <p class="bf-mechanism bf-code-wrap"><span class="bf-code-label">Your code</span><span class="bf-code">HOST27</span><span class="bf-code-note">takes $100 off your first year at checkout. One redemption per customer.</span></p>