python: missing start tag for relation

Author: yoff

python/ql/lib/semmlecode.python.dbscheme.stats

@@ -7496,6 +7496,7 @@
 </columnsizes>
 <dependencies/>
 </relation>
+<relation>
 <name>py_patterns</name>
 <cardinality>1000</cardinality>
 <columnsizes>
@@ -7518,6 +7519,7 @@
 </columnsizes>
 <dependencies/>
 </relation>
+<relation>
 <name>py_pattern_lists</name>
 <cardinality>1000</cardinality>
 <columnsizes>