Change hint message for `field-choices-constraint` #223

Job	Run time
lint	28s
tests (3.8, Django>=4.2,<5.0)	13s
tests (3.9, Django>=4.2,<5.0)	14s
tests (3.10, Django>=4.2,<5.0)	16s
tests (3.10, Django>=5.0,<5.1)	18s
tests (3.10, Django>=5.1,<5.2)	24s
package	15s
tests (3.11, Django>=4.2,<5.0)	13s
tests (3.11, Django>=5.0,<5.1)	16s
tests (3.11, Django>=5.1,<5.2)	17s
tests (3.12, Django>=4.2,<5.0)	23s
tests (3.12, Django>=5.0,<5.1)	13s
tests (3.12, Django>=5.1,<5.2)	18s
tests (3.13, Django>=4.2,<5.0)	27s
tests (3.13, Django>=5.0,<5.1)	21s
tests (3.13, Django>=5.1,<5.2)	27s
tests (3.12, Django<5.2,>=5.0, djangorestframework)	17s
publish	0s
	5m 20s

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