update tests

tests/fixtures/static/model_all.md

@@ -37,6 +37,7 @@ This model tests all methods and types that are present within the sdRDM library
   - Type: Nested
 - nested_multiple_obj
   - Type: Nested[]
+  - XML: nested_multiple_obj/nested
 
 ### Nested
 

tests/fixtures/static/model_all_expected.xml

@@ -11,22 +11,20 @@
   <http_url_value>https://www.google.com/</http_url_value>
   <email_value>[email protected]</email_value>
   <bytes_value>this_is_bytes</bytes_value>
-  <multiple_primitives>
-    <float>1.5</float>
-    <float>1.7</float>
-    <float>1.9</float>
-  </multiple_primitives>
+  <multiple_primitives>1.5</multiple_primitives>
+  <multiple_primitives>1.7</multiple_primitives>
+  <multiple_primitives>1.9</multiple_primitives>
   <enum_value>value1</enum_value>
   <nested_single_obj id="id">
     <str_value>string</str_value>
     <float_value>1.5</float_value>
     <int_value>1</int_value>
   </nested_single_obj>
   <nested_multiple_obj>
-    <Nested id="id">
+    <nested id="id">
       <str_value>string</str_value>
       <float_value>1.5</float_value>
       <int_value>1</int_value>
-    </Nested>
+    </nested>
   </nested_multiple_obj>
 </Root>