docstrings changed for solve to match opty #439

Job	Run time
Build and run tests (ubuntu-latest, 3.9)	4m 37s
Build and run tests (ubuntu-latest, 3.10)	4m 50s
Build and run tests (ubuntu-latest, 3.11)	4m 24s
Build and run tests (ubuntu-latest, 3.12)	4m 50s
Build and run tests (ubuntu-latest, 3.13)	4m 32s
Build and run tests (macos-13, 3.9)	7m 12s
Build and run tests (macos-13, 3.10)	7m 4s
Build and run tests (macos-13, 3.11)	7m 18s
Build and run tests (macos-13, 3.12)	7m 27s
Build and run tests (macos-13, 3.13)	6m 34s
Build and run tests (macos-latest, 3.9)	3m 31s
Build and run tests (macos-latest, 3.10)	3m 46s
Build and run tests (macos-latest, 3.11)	4m 27s
Build and run tests (macos-latest, 3.12)	3m 48s
Build and run tests (macos-latest, 3.13)	3m 47s
Build and run tests (windows-latest, 3.9)	7m 36s
Build and run tests (windows-latest, 3.10)	7m 36s
Build and run tests (windows-latest, 3.11)	8m 44s
Build and run tests (windows-latest, 3.12)	8m 6s
Build and run tests (windows-latest, 3.13)	8m 14s
	1h 58m 23s

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