fix(templates): mark Cal.com as AMD-only

Add the `amd_only` flag to the Cal.com service entry in both template JSON files so it is constrained to supported architecture.

templates/service-templates-latest.json

@@ -408,7 +408,8 @@
         "category": "productivity",
         "logo": "svgs/calcom.svg",
         "minversion": "0.0.0",
-        "port": "3000"
+        "port": "3000",
+        "amd_only": true
     },
     "calibre-web-automated-book-downloader": {
         "documentation": "https://github.com/calibrain/calibre-web-automated-book-downloader?utm_source=coolify.io",

templates/service-templates.json

@@ -408,7 +408,8 @@
         "category": "productivity",
         "logo": "svgs/calcom.svg",
         "minversion": "0.0.0",
-        "port": "3000"
+        "port": "3000",
+        "amd_only": true
     },
     "calibre-web-automated-book-downloader": {
         "documentation": "https://github.com/calibrain/calibre-web-automated-book-downloader?utm_source=coolify.io",