feat(xml): replace spaces with underscores

... since XML tags cannot have spaces in them (I think).

Author: sanjayankur31

src/modelspec/utils.py

@@ -148,14 +148,14 @@ def build_xml_element(parent, data):
         if isinstance(data, dict):
             for key, value in data.items():
                 if isinstance(value, dict):
-                    element = ET.SubElement(parent, key)
+                    element = ET.SubElement(parent, key.replace(" ", "_"))
                     build_xml_element(element, value)
                 elif isinstance(value, list):
                     for item in value:
-                        subelement = ET.SubElement(parent, key)
+                        subelement = ET.SubElement(parent, key.replace(" ", "_"))
                         build_xml_element(subelement, item)
                 else:
-                    element = ET.SubElement(parent, key)
+                    element = ET.SubElement(parent, key.replace(" ", "_"))
                     element.text = str(value)
         else:
             parent.text = str(data)