Rename ReadyforMerge to PullRequestFeedback on release pipeline

This is a follow-up of gradle/gradle-bot#29,
which keeps the build type id consistent with master pipeline.

.teamcity/src/main/kotlin/model/CIBuildModel.kt

@@ -22,9 +22,7 @@ import projects.DEFAULT_LINUX_FUNCTIONAL_TEST_BUCKET_SIZE
 enum class StageNames(override val stageName: String, override val description: String) : StageName {
     QUICK_FEEDBACK_LINUX_ONLY("Quick Feedback - Linux Only", "Run checks and functional tests (embedded executer, Linux)"),
     QUICK_FEEDBACK("Quick Feedback", "Run checks and functional tests (embedded executer, Windows)"),
-    READY_FOR_MERGE("Pull Request Feedback", "Run vairous functional tests against distribution") {
-        override val id: String = "ReadyforMerge"
-    },
+    READY_FOR_MERGE("Pull Request Feedback", "Run various functional tests against distribution"),
     READY_FOR_NIGHTLY("Ready for Nightly", "Rerun tests in different environments / 3rd party components"),
     READY_FOR_RELEASE("Ready for Release", "Once a day: Rerun tests in more environments"),
     HISTORICAL_PERFORMANCE("Historical Performance", "Once a week: Run performance tests for multiple Gradle versions"),