[pre-commit.ci] auto fixes from pre-commit hooks

Author: pre-commit-ci[bot]

doc/source/examples/toolsexample.rst

@@ -56,4 +56,4 @@ Using the tools module, we can efficiently get them in terms of a dictionary.
     updated_dict = get_package_info("my_package", metadata=existing_dict))
 
    note that `"diffpy.utils"` is automatically included in the package info since the `get_user_info` function is
-   part of diffpy.utils. 
+   part of diffpy.utils.

doc/source/utilities/toolsutility.rst

@@ -17,7 +17,7 @@ The ``diffpy.utils.tools`` module provides tool functions for use with diffpy ap
   ``{"package_info": {"package1": "version_number1", "package2": "version_number2"}`` if the function is called more than
   once.
 
-  Users can use these functions to track and manage versions of packages that can later be stored, for example, in an output 
-  file header. 
+  Users can use these functions to track and manage versions of packages that can later be stored, for example, in an output
+  file header.
 
 For a more in-depth tutorial for how to use these tools, click :ref:`here <Tools Example>`.