docs: Improve the description for the clear cache option #32819

Job	Run time
End to end test - e2e/applied-rule-change-docblock	22s
End to end test - e2e/applied-auto-import	20s
End to end test - e2e/applied-polyfill-php80	18s
End to end test - e2e/applied-rule-return-array-nodes	21s
End to end test - e2e/applied-rule-removed-node	21s
End to end test - e2e/invalid-paths	20s
End to end test - e2e/no-parallel-reflection-resolver	23s
End to end test - e2e/only-option-quote-single-bsdouble	22s
End to end test - e2e/print-new-node	28s
End to end test - e2e/different-path-over-skip-config	24s
End to end test - e2e/parallel-custom-config	19s
End to end test - e2e/only-option	19s
End to end test - e2e/only-option-quote-single	22s
End to end test - e2e/only-option-quote-single-equalnone	24s
End to end test - e2e/only-option-quote-double-equalnone	23s
End to end test - e2e/parallel-reflection-resolver	26s
End to end test - e2e/parallel with space	18s
	6m 10s

Provide feedback