fix(core): use correct experimental annotation

Author: ObserverOfTime

kbigint/src/androidMain/kotlin/io/github/observeroftime/kbigint/KBigInt.kt

@@ -178,7 +178,7 @@ actual class KBigInt private constructor(private var value: BigInteger) : Compar
      *
      * @since 0.5.0
      */
-    @ExperimentalStdlibApi
+    @ExperimentalMultiplatform
     actual infix fun root(n: Int): KBigInt {
         if (n <= 0) throw ArithmeticException("Non-positive root")
         if (sign == -1 && (n and 1) == 0)

kbigint/src/androidUnitTest/kotlin/io/github/observeroftime/kbigint/KBigIntTest.kt

@@ -93,7 +93,7 @@ actual class KBigIntTest {
     }
 
     @Test
-    @OptIn(ExperimentalStdlibApi::class)
+    @OptIn(ExperimentalMultiplatform::class)
     actual fun testRoot() {
         assertEquals(KBigInt("100"), KBigInt("1000000") root 3)
         assertEquals(KBigInt("-10"), KBigInt("-100000") root 5)

kbigint/src/jsMain/kotlin/io/github/observeroftime/kbigint/KBigInt.kt

@@ -218,7 +218,7 @@ actual class KBigInt private constructor(@JsExternalArgument private var value:
      * @since 0.5.0
      * @throws [ArithmeticException] if the value is negative and `n` is positive, or `n <= 0`
      */
-    @ExperimentalStdlibApi
+    @ExperimentalMultiplatform
     actual infix fun root(n: Int): KBigInt {
         if (n <= 0) throw ArithmeticException("Non-positive root")
         if (sign == -1 && (n and 1) == 0)

kbigint/src/jsTest/kotlin/io/github/observeroftime/kbigint/KBigIntTest.kt

@@ -94,7 +94,7 @@ actual class KBigIntTest {
     }
 
     @Test
-    @OptIn(ExperimentalStdlibApi::class)
+    @OptIn(ExperimentalMultiplatform::class)
     actual fun testRoot() {
         assertEquals(KBigInt("100"), KBigInt("1000000") root 3)
         assertEquals(KBigInt("-10"), KBigInt("-100000") root 5)

kbigint/src/jvmMain/kotlin/io/github/observeroftime/kbigint/KBigInt.kt

@@ -177,7 +177,7 @@ actual class KBigInt private constructor(private var value: BigInteger) : Compar
      * @since 0.5.0
      * @throws [ArithmeticException] if the value is negative and `n` is positive, or `n <= 0`
      */
-    @ExperimentalStdlibApi
+    @ExperimentalMultiplatform
     @Throws(ArithmeticException::class)
     actual infix fun root(n: Int): KBigInt {
         if (n <= 0) throw ArithmeticException("Non-positive root")

kbigint/src/jvmTest/kotlin/io/github/observeroftime/kbigint/KBigIntTest.kt

@@ -94,7 +94,7 @@ actual class KBigIntTest {
     }
 
     @Test
-    @OptIn(ExperimentalStdlibApi::class)
+    @OptIn(ExperimentalMultiplatform::class)
     actual fun testRoot() {
         assertEquals(KBigInt("100"), KBigInt("1000000") root 3)
         assertEquals(KBigInt("-10"), KBigInt("-100000") root 5)