Add GEOPHIRES v3 User Manual to References

Author: softwareengineerprogrammer

CHANGELOG.rst

@@ -7,7 +7,7 @@ GEOPHIRES v3 (2023-2025)
 
 3.9
 ^^^
-3.9.65: `GEOPHIRES Project Tenets, example_SAM-Single-Owner-PPA PI/II pumping power <https://github.com/NREL/GEOPHIRES-X/pull/432>`__ | `release <https://github.com/NREL/GEOPHIRES-X/releases/tag/v3.9.65>`__
+3.9.65: `v3 User Manual, GEOPHIRES Project Tenets, example_SAM-Single-Owner-PPA PI/II pumping power <https://github.com/NREL/GEOPHIRES-X/pull/432>`__ | `release <https://github.com/NREL/GEOPHIRES-X/releases/tag/v3.9.65>`__
 
 3.9.64: `Update tooltip texts from theoretical basis <https://github.com/NREL/GEOPHIRES-X/pull/430>`__ | `release <https://github.com/NREL/GEOPHIRES-X/releases/tag/v3.9.64>`__
 

References/GEOPHIRES_v3_UserManual.pdf

@@ -1,5 +1,6 @@
 
 # GEOPHIRES
+* [GEOPHIRES v3 User Manual](GEOPHIRES_v3_UserManual.pdf)
 * [GEOPHIRES v2.0 User Manual.pdf](https://github.com/NREL/GEOPHIRES-X/blob/fb5caadfa419c3bd05de656a33700d085fbc0432/References/GEOPHIRES%20v2.0%20User%20Manual.pdf) [![](https://zenodo.org/badge/doi/10.1186/s40517-019-0119-6.svg)](https://doi.org/10.1186/s40517-019-0119-6)
 * [Beckers 2019 GEOPHIRES v2.pdf](https://github.com/NREL/GEOPHIRES-X/blob/fb5caadfa419c3bd05de656a33700d085fbc0432/References/Beckers%202019%20GEOPHIRES%20v2.pdf)
 * [Beckers 2018 Introducing GEOPHIRES v2.pdf](https://github.com/NREL/GEOPHIRES-X/blob/fb5caadfa419c3bd05de656a33700d085fbc0432/References/Beckers%202018%20Introducing%20GEOPHIRES%20v2.pdf)