fix heading in json 2.0

src/json_converter.py

@@ -37,7 +37,10 @@ class JSONConverter:
         :param ind: Index of header in content list.
         """
         if self.content[ind].name in LawCartaConfig.SUPPORTED_HEADERS:
-            title = self.content[ind]
+            title = ''
+            for child in self.content[ind].find_all(recursive=False):
+                title += str(child)
+
             curr_outline = int(re.sub(r"^h", "", self.content[ind].name))  # extract outline from tag
             result = {
                 'title': f'{title}',