Add path sanitization missing step in some DataSources methods. (#2054)

* Add path sanitization missing step in some DataSources methods.

* Fix docstring for DataSources.set_result_file_path

* Fix docstring for DataSources.set_result_file_path

src/ansys/dpf/core/data_sources.py

@@ -133,10 +133,11 @@ def set_result_file_path(self, filepath, key=""):
         >>> data_sources = dpf.DataSources()
         >>> data_sources.set_result_file_path('/tmp/file.rst')
         >>> data_sources.result_files
-        ['/tmp/file.rst']
+        ['...tmp...file.rst']
 
         """
-        extension = Path(filepath).suffix
+        filepath = Path(filepath)
+        extension = filepath.suffix
         # Handle .res files from CFX
         if key == "" and extension == ".res":
             key = "cas"
@@ -199,6 +200,7 @@ def set_domain_result_file_path(
         >>> data_sources.set_domain_result_file_path('/tmp/file1.sub', 1)
 
         """
+        path = Path(path)
         if key:
             self._api.data_sources_set_domain_result_file_path_with_key_utf8(
                 self, str(path), key, domain_id