update phrasing, fix paste error

docs/relnotes.rst

@@ -30,7 +30,7 @@ Version 1.5.0
 WebbPSF IS BEING MIGRATED TO A NEW REPOSITORY: STPSF (Space Telescope PSF)
 To reflect its broader support for Roman as well as James Webb, WebbPSF is being migrated to a new repository: STPSF (Space Telescope PSF).
 This transition is being done in such a way as to maintain back-compatibility for existing code, and existing installations will continue to run as-is.
-This transitional period is ongoing now.
+This release will be among the final releases to WebbPSF and the initial release to STPSF.
 
 This release requires new data webbpsf-data-1.5.0 https://stsci.box.com/s/oyoih9ibuaowksxzaia02ua4t6g1bbp1
 For more information on this new data please view https://github.com/spacetelescope/webbpsf/pull/937
@@ -75,28 +75,7 @@ Version 1.4.0
 
 We are pleased to announce the release of the latest version of WebbPSF version 1.4.0, now available on PyPi and GitHub. This release comes with new features and improvements including but not limited to:
 
-* [CI] allow manual run of `download_data.yml` to specify data URL by @zacharyburnett in https://github.com/spacetelescope/webbpsf/pull/914
-* trivial fix to string formatting for a debug message by @mperrin in https://github.com/spacetelescope/webbpsf/pull/918
-* Add IFU+datacubes docs page. by @mperrin in https://github.com/spacetelescope/webbpsf/pull/917
-* build(deps): update pysiaf requirement from <0.23.0,>=0.22.0 to >=0.22.0,<0.24.0 by @dependabot in https://github.com/spacetelescope/webbpsf/pull/920
-* Update for Photutils 2.0 by @mperrin in https://github.com/spacetelescope/webbpsf/pull/925
-* MNT: Use hash for Action workflow versions and update if needed by @pllim in https://github.com/spacetelescope/webbpsf/pull/916
-* Dependabot updates PLUS pyproject upper limit for photutils.  by @dependabot in https://github.com/spacetelescope/webbpsf/pull/926
-* update ifu docs to describe about coord_system and pixel scale by @mperrin in https://github.com/spacetelescope/webbpsf/pull/923
-* update photutils upper bound by @BradleySappington in https://github.com/spacetelescope/webbpsf/pull/935
-* Add automatic data download by @WilliamJamieson in https://github.com/spacetelescope/webbpsf/pull/932
-* switch a test case float comparison to np.allclose for robustness by @mperrin in https://github.com/spacetelescope/webbpsf/pull/934
-* Add support for new sensing point and target phase map by @obi-wan76 in https://github.com/spacetelescope/webbpsf/pull/937
-* Minor update to docs about the WFI optical model by @Skyhawk172 in https://github.com/spacetelescope/webbpsf/pull/936
-* build(deps): update ipython requirement from <8.30.0,>=8.27.0 to >=8.27.0,<8.31.0 by @dependabot in https://github.com/spacetelescope/webbpsf/pull/939
-* update monthly trending plot to allow shifted date ranges by @mperrin in https://github.com/spacetelescope/webbpsf/pull/943
-* Readme advise by @BradleySappington in https://github.com/spacetelescope/webbpsf/pull/944
-* update MAST query for OPDs to also retrieve OPDs from FP6 by @mperrin in https://github.com/spacetelescope/webbpsf/pull/945
-
-## New Contributors
-* @WilliamJamieson made their first contribution in https://github.com/spacetelescope/webbpsf/pull/932
-
-**Full Changelog**: https://github.com/spacetelescope/webbpsf/compare/v1.4.0...1.5.0.rc
+**What's Changed**
 * Improve trending plots, particularly wfe_histogram arrows display by @mperrin in https://github.com/spacetelescope/webbpsf/pull/870
 
 * build(deps): bump photutils from 1.12.0 to 1.13.0 by @dependabot in https://github.com/spacetelescope/webbpsf/pull/872