Fix v1.0.0 zenodo citation.

[MFraters]

Fix for issue noticed by @gassmoeller in geodynamics/aspect#6012. Thanks!

[github-actions]

Benchmark	Main	Feature	Difference (99.9% CI)
Slab interpolation simple none	0.993 ± 0.006 (s=442)	0.992 ± 0.007 (s=467)	-0.2% .. +0.1%
Slab interpolation curved simple none	0.994 ± 0.006 (s=453)	0.994 ± 0.004 (s=455)	-0.1% .. +0.1%
Spherical slab interpolation simple none	1.162 ± 0.009 (s=384)	1.162 ± 0.007 (s=393)	-0.2% .. +0.2%
Slab interpolation simple curved CMS	1.033 ± 0.004 (s=454)	1.033 ± 0.004 (s=419)	-0.1% .. +0.1%
Spherical slab interpolation simple CMS	1.571 ± 0.012 (s=276)	1.568 ± 0.010 (s=300)	-0.3% .. +0.0%
Spherical fault interpolation simple none	1.164 ± 0.006 (s=386)	1.164 ± 0.007 (s=390)	-0.2% .. +0.1%
Cartesian min max surface	2.323 ± 0.032 (s=192)	2.325 ± 0.027 (s=198)	-0.4% .. +0.5%
Spherical min max surface	7.019 ± 0.030 (s=63)	7.017 ± 0.026 (s=68)	-0.3% .. +0.2%