Fix the generated XML Schema type for float

Author: dunglas

src/Hydra/Serializer/DocumentationNormalizer.php

@@ -303,7 +303,7 @@ private function getRange(PropertyMetadata $propertyMetadata)
                 return 'xmls:integer';
 
             case Type::BUILTIN_TYPE_FLOAT:
-                return 'xmls:number';
+                return 'xmls:decimal';
 
             case Type::BUILTIN_TYPE_BOOL:
                 return 'xmls:boolean';