updating to remove warning from docs build

docs/project_defn.rst

@@ -47,9 +47,16 @@ Custom Weather Files
 
 To use your own custom weather files for a specific location, this can be done in **one** of two ways:
 
-- Rename the filename references in your local `options_lookup.tsv <https://github.com/NREL/resstock/blob/master/resources/options_lookup.tsv>`_ in the ``resources`` folder to match your custom weather file names. For example, in the options_lookup tsv, the Location ``AL_Birmingham.Muni.AP.722280`` is matched to the ``weather_file_name=USA_AL_Birmingham.Muni.AP.722280.epw``. To update the weather file for this location, the `weather_file_name` field needs to be updated to match your new name specified.
-
-- Rename your custom .epw weather file to match the references in your local `options_lookup.tsv <https://github.com/NREL/resstock/blob/master/resources/options_lookup.tsv>`_ in the ``resources`` folder.
+- Rename the filename references in your local `options_lookup.tsv`_ in the
+  ``resources`` folder to match your custom weather file names. For example, in
+  the options_lookup.tsv, the Location ``AL_Birmingham.Muni.AP.722280`` is
+  matched to the ``weather_file_name=USA_AL_Birmingham.Muni.AP.722280.epw``. To
+  update the weather file for this location, the `weather_file_name` field needs
+  to be updated to match your new name specified.
+- Rename your custom .epw weather file to match the references in your local
+  `options_lookup.tsv`_ in the ``resources`` folder.
+
+.. _options_lookup.tsv: https://github.com/NREL/resstock/blob/main/resources/options_lookup.tsv
 
 References
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