Update Symfony detection

- Simplified HTML detection
- The current detection is actually only for the web profiler, and would rarely, if not never, be visible on a public site. The version detection is also wrong as well, so this was removed.

src/technologies.json

@@ -16120,13 +16120,15 @@
         "sf_redirect": ""
       },
       "description": "Symfony is a PHP web application framework and a set of reusable PHP components/libraries.",
-      "html": "(?:<div class=\"sf-toolbar[^>]+?>[^]+<span class=\"sf-toolbar-value\">([\\d.])+|<div id=\"sfwdt[^\"]+\" class=\"[^\"]*sf-toolbar)\\;version:\\1",
+      "html": [
+        "<div id=\"sfwdt[^\"]+\" class=\"[^\"]*sf-toolbar"
+      ],
       "icon": "Symfony.svg",
       "implies": "PHP",
       "js": {
         "Sfjs": ""
       },
-      "website": "http://symfony.com"
+      "website": "https://symfony.com"
     },
     "Sympa": {
       "cats": [