Fixed Synthwomb pregnancy speed.

[Mercuriussnake]

Synthwomb pregnancy speed is always maxed out regardless of which setting is chosen.

 

[Wafflesnake]

the setting is to adjust fertility

 

[Jacques00]

Adjusted for the next release.

I'm not sure if it was intentional for the incubation speed bonus to apply to all settings. But, to prevent confusion, I've made it so setting the SynthWomb to Fertility will toggle on the incubation speed bonus, so the other two settings will not apply the speed bonus.