DOC: Fixed doc reference.

src/caosadvancedtools/table_json_conversion/convert.py

@@ -155,8 +155,9 @@ class ForeignError(KeyError):
 class XLSXConverter:
     """Class for conversion from XLSX to JSON.
 
-    For a detailed description of the required formatting of the XLSX files, see ``specs.md`` in the
-    documentation.
+    For a detailed description of the required formatting of the XLSX files, see ``specs.rst`` in
+    the documentation.
+
     """
     PARSER: dict[str, Callable] = {
         "string": str,