fix path calc

Author: JohnMount

coverage.txt

@@ -34,11 +34,11 @@ tests/test_typs_in_frame.py .                                            [100%]
 Name                      Stmts   Miss  Cover
 ---------------------------------------------
 wvpy/__init__.py              3      0   100%
-wvpy/jtools.py              135     27    80%
+wvpy/jtools.py              136     27    80%
 wvpy/pysheet.py              74     74     0%
 wvpy/render_workbook.py      46     46     0%
 wvpy/util.py                321      7    98%
 ---------------------------------------------
-TOTAL                       579    154    73%
+TOTAL                       580    154    73%
 
-======================= 20 passed, 2 warnings in 17.47s ========================
+======================= 20 passed, 2 warnings in 16.89s ========================

pkg/build/lib/wvpy/jtools.py

@@ -203,7 +203,8 @@ def render_as_html(
     if init_code is not None:
         assert isinstance(init_code, str)
         nb = prepend_code_cell_to_notebook(nb, code_text=init_code)
-    html_name = notebook_file_name.removesuffix(suffix)
+    html_name = os.path.basename(notebook_file_name)
+    html_name = html_name.removesuffix(suffix)
     exec_note = ""
     if output_suffix is not None:
         assert isinstance(output_suffix, str)