Corrected Sapphire spelling broke type fetching

[BitTim]

After the this pull request has been merged into PokeApi, type fetching no longer works since it throws the following exception:

io.ktor.serialization.JsonConvertException: Illegal input: Field 'ruby-saphire' is required for type with serial name 'co.pokeapi.pokekotlin.model.GenerationIiiTypeSprites', but it was missing at path: $.sprites.generation-iii
    at io.ktor.serialization.kotlinx.KotlinxSerializationConverter.deserialize(KotlinxSerializationConverter.kt:79)
    at io.ktor.serialization.ContentConverterKt$deserialize$$inlined$map$1$2.emit(Emitters.kt:51)
    at kotlinx.coroutines.flow.FlowKt__BuildersKt$asFlow$$inlined$unsafeFlow$3.collect(SafeCollector.common.kt:111)
    at io.ktor.serialization.ContentConverterKt$deserialize$$inlined$map$1.collect(SafeCollector.common.kt:109)
    at kotlinx.coroutines.flow.FlowKt__ReduceKt.firstOrNull(Reduce.kt:247)
    at kotlinx.coroutines.flow.FlowKt.firstOrNull(Unknown Source:1)
    at io.ktor.serialization.ContentConverterKt.deserialize(ContentConverter.kt:113)
    at io.ktor.client.plugins.contentnegotiation.ContentNegotiationKt.ContentNegotiation$lambda$0$convertResponse(ContentNegotiation.kt:284)
    at io.ktor.client.plugins.contentnegotiation.ContentNegotiationKt.access$ContentNegotiation$lambda$0$convertResponse(ContentNegotiation.kt:1)
    at io.ktor.client.plugins.contentnegotiation.ContentNegotiationKt$ContentNegotiation$2$2.invokeSuspend(ContentNegotiation.kt:299)
    at io.ktor.client.plugins.contentnegotiation.ContentNegotiationKt$ContentNegotiation$2$2.invoke(Unknown Source:19)
    at io.ktor.client.plugins.contentnegotiation.ContentNegotiationKt$ContentNegotiation$2$2.invoke(Unknown Source:10)
    at io.ktor.client.plugins.api.TransformResponseBodyHook$install$1.invokeSuspend(KtorCallContexts.kt:113)
    at io.ktor.client.plugins.api.TransformResponseBodyHook$install$1.invoke(Unknown Source:11)
    at io.ktor.client.plugins.api.TransformResponseBodyHook$install$1.invoke(Unknown Source:6)
    at io.ktor.util.pipeline.DebugPipelineContext.proceedLoop(DebugPipelineContext.kt:79)
    at io.ktor.util.pipeline.DebugPipelineContext.proceed(DebugPipelineContext.kt:57)
    at io.ktor.client.HttpClient$4.invokeSuspend(HttpClient.kt:1401)
    at io.ktor.client.HttpClient$4.invoke(Unknown Source:11)
    at io.ktor.client.HttpClient$4.invoke(Unknown Source:6)
    at io.ktor.util.pipeline.DebugPipelineContext.proceedLoop(DebugPipelineContext.kt:79)
    at io.ktor.util.pipeline.DebugPipelineContext.proceed(DebugPipelineContext.kt:57)
    at io.ktor.client.plugins.ReceiveError$install$1.invokeSuspend(HttpCallValidator.kt:165)
    at io.ktor.client.plugins.ReceiveError$install$1.invoke(Unknown Source:11)
    at io.ktor.client.plugins.ReceiveError$install$1.invoke(Unknown Source:6)
    at io.ktor.util.pipeline.DebugPipelineContext.proceedLoop(DebugPipelineContext.kt:79)
    at io.ktor.util.pipeline.DebugPipelineContext.proceed(DebugPipelineContext.kt:57)
    at io.ktor.util.pipeline.DebugPipelineContext.execute$ktor_utils(DebugPipelineContext.kt:63)
    at io.ktor.util.pipeline.Pipeline.execute(Pipeline.kt:92)
    at io.ktor.client.call.HttpClientCall.bodyNullable(HttpClientCall.kt:99)
    at co.pokeapi.pokekotlin.PokeApi.getType(PokeApi.kt:3218)

I am going to open a PR with the fix in a second as well, since it is a very simple one.