Fix template

Author: yzaoui

modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-retrofit2/api.mustache

@@ -78,7 +78,7 @@ import okhttp3.MultipartBody
     * enum for parameter {{paramName}}
     */
     {{#kotlinx_serialization}}@Serializable
-{{/kotlinx_serialization}}{{#nonPublicApi}}internal {{/nonPublicApi}}{{^nonPublicApi}}{{#explicitApi}}public {{/explicitApi}}{{/nonPublicApi}}enum class {{enumName}}{{operationIdCamelCase}}({{^nonPublicApi}}{{#explicitApi}}public {{/explicitApi}}{{/nonPublicApi}}val value: {{^isContainer}}{{dataType}}{{/isContainer}}{{#isContainer}}kotlin.String{{/isContainer}}) {
+    {{/kotlinx_serialization}}{{#nonPublicApi}}internal {{/nonPublicApi}}{{^nonPublicApi}}{{#explicitApi}}public {{/explicitApi}}{{/nonPublicApi}}enum class {{enumName}}{{operationIdCamelCase}}({{^nonPublicApi}}{{#explicitApi}}public {{/explicitApi}}{{/nonPublicApi}}val value: {{^isContainer}}{{dataType}}{{/isContainer}}{{#isContainer}}kotlin.String{{/isContainer}}) {
     {{^enumUnknownDefaultCase}}
         {{#allowableValues}}
             {{#enumVars}}

samples/client/petstore/kotlin-retrofit2-kotlinx_serialization/src/main/kotlin/org/openapitools/client/apis/PetApi.kt

@@ -45,7 +45,7 @@ interface PetApi {
     * enum for parameter status
     */
     @Serializable
-enum class StatusFindPetsByStatus(val value: kotlin.String) {
+    enum class StatusFindPetsByStatus(val value: kotlin.String) {
         @SerialName(value = "available") AVAILABLE("available"),
         @SerialName(value = "pending") PENDING("pending"),
         @SerialName(value = "sold") SOLD("sold")