Use `NNlib.bias_act!` #3440

Job	Run time
Documentation	9m 23s
Julia 1.10 - ubuntu-latest - x64	19m 46s
Julia 1 - ubuntu-latest - x64	29m 6s
Julia nightly - ubuntu-latest - x64	5m 26s
Julia 1 - windows-latest - x64	29m 53s
Julia 1 - macOS-latest - aarch64	16m 15s
	1h 49m 49s

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