Update kmath-kotlingrad features references

[emmanuel-ferdman]

PR Summary

Small PR - Commit 7064546 renamed kmath-kotlingrad/src/main to be kmath-kotlingrad/src/jvmMain. This PR adjusts sources to changes.

[SPC-code]

Thanks. Thow features are auto generated. It should be changed here:

kmath/kmath-kotlingrad/build.gradle.kts

Lines 26 to 43 in 6938aa0

	readme {
	maturity = space.kscience.gradle.Maturity.EXPERIMENTAL
	propertyByTemplate("artifact", rootProject.file("docs/templates/ARTIFACT-TEMPLATE.md"))
	feature(
	"differentiable-mst-expression",
	"src/main/kotlin/space/kscience/kmath/kotlingrad/KotlingradExpression.kt",
	) {
	"MST based DifferentiableExpression."
	}
	feature(
	"scalars-adapters",
	"src/main/kotlin/space/kscience/kmath/kotlingrad/scalarsAdapters.kt",
	) {
	"Conversions between Kotlin∇'s SFun and MST"
	}
	}

[emmanuel-ferdman]

@SPC-code Sorry, I updated the Gradle build files and reverted the changes in README.md.

[SPC-code]

Nice, thanks a lot!