Fix several typos in docs of K/N runtime (#5054)

kotlin-native/runtime/src/main/kotlin/kotlin/native/Platform.kt

@@ -70,7 +70,7 @@ public object Platform {
         get() = OsFamily.values()[Platform_getOsFamily()]
 
     /**
-     * Architechture of the CPU program executes upon.
+     * Architecture of the CPU program executes upon.
      */
     public val cpuArchitecture: CpuArchitecture
         get() = CpuArchitecture.values()[Platform_getCpuArchitecture()]

kotlin-native/runtime/src/main/kotlin/kotlin/native/concurrent/Lazy.kt

@@ -122,7 +122,7 @@ internal class AtomicLazyImpl<out T>(initializer: () -> T) : Lazy<T> {
  * Atomic lazy initializer, could be used in frozen objects, freezes initializing lambda,
  * so use very carefully. Also, as with other uses of an [AtomicReference] may potentially
  * leak memory, so it is recommended to use `atomicLazy` in cases of objects living forever,
- * such as object signletons, or in cases where it's guaranteed not to have cyclical garbage.
+ * such as object singletons, or in cases where it's guaranteed not to have cyclical garbage.
  */
 @FreezingIsDeprecated
 public fun <T> atomicLazy(initializer: () -> T): Lazy<T> = AtomicLazyImpl(initializer)

kotlin-native/runtime/src/main/kotlin/kotlin/native/concurrent/MutableData.kt

@@ -18,7 +18,7 @@ external private fun CopyMemory(to: COpaquePointer?, from: COpaquePointer?, coun
 internal external fun readHeapRefNoLock(where: Any, index: Int): Any?
 
 /**
- * Mutable concurrently accessible data buffer. Could be accessed from several workers simulteniously.
+ * Mutable concurrently accessible data buffer. Could be accessed from several workers simultaneously.
  */
 @Frozen
 @NoReorderFields

kotlin-native/runtime/src/main/kotlin/kotlin/native/concurrent/ObjectTransfer.kt

@@ -38,11 +38,11 @@ import kotlin.native.internal.Frozen
 // Not @FreezingIsDeprecated: every `Worker.execute` uses this.
 public enum class TransferMode(val value: Int) {
     /**
-     * Reachibility check is performed.
+     * Reachability check is performed.
      */
     SAFE(0),
     /**
-     * Skip reachibility check, can lead to mysterious crashes in an application.
+     * Skip reachability check, can lead to mysterious crashes in an application.
      * USE UNSAFE MODE ONLY IF ABSOLUTELY SURE WHAT YOU'RE DOING!!!
      */
     UNSAFE(1)

kotlin-native/runtime/src/main/kotlin/kotlin/native/internal/Boxing.kt

@@ -41,7 +41,7 @@ external fun getCachedLongBox(value: Long): Long?
 @GCUnsafeCall("inLongBoxCache")
 external fun inLongBoxCache(value: Long): Boolean
 
-// TODO: functions below are used for ObjCExport and CAdapterGenerator, move and rename them correspondigly.
+// TODO: functions below are used for ObjCExport and CAdapterGenerator, move and rename them correspondingly.
 
 @ExportForCppRuntime("Kotlin_boxBoolean")
 fun boxBoolean(value: Boolean): Boolean? = value