Tweak letter case of "SQLite" and change article "a" -> "an"

doctrine/doctrine-bundle/1.6/manifest.json

@@ -8,7 +8,7 @@
     },
     "env": {
         "#1": "Format described at http://docs.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/configuration.html#connecting-using-a-url",
-        "#2": "For a sqlite database, use: \"sqlite:///%kernel.project_dir%/var/data.db\"",
+        "#2": "For an SQLite database, use: \"sqlite:///%kernel.project_dir%/var/data.db\"",
         "#3": "Set \"serverVersion\" to your server version to avoid edge-case exceptions and extra database calls",
         "DATABASE_URL": "\"mysql://root@127.0.0.1:3306/symfony?charset=utf8mb4&serverVersion=5.7\""
     }