Fix tests

Author: rushter

tests/test_lexbor.py

@@ -92,6 +92,7 @@ def test_inner_html_pretty_parser():
     assert parser.inner_html_pretty(skip_ws_nodes=True) == clean_doc(
         """
         <span>
+          "Hello"
         </span>
         """
     )

tests/test_lexbor_fragment.py

@@ -156,19 +156,23 @@ def test_fragment_root_html_pretty_serialization():
         """
         <div>
           <span>
+            "Hello"
           </span>
         </div>
         <span>
+          "World"
         </span>
         """
     )
     assert p.html_pretty(skip_ws_nodes=True) == clean_doc(
         """
         <div>
           <span>
+            "Hello"
           </span>
         </div>
         <span>
+          "World"
         </span>
         """
     )