Replace appendln with appendLine in project

plugins/kapt3/kapt3-cli/test/org/jetbrains/kotlin/kapt/cli/test/AbstractKaptToolIntegrationTest.kt

@@ -96,8 +96,8 @@ abstract class AbstractKaptToolIntegrationTest : TestCaseWithTmpdir() {
         if (!process.waitFor(2, TimeUnit.MINUTES)) err("Process is still alive")
         if (process.exitValue() != 0) {
             throw GotResult(buildString {
-                append("Return code: ").appendln(process.exitValue()).appendln()
-                appendln(outputFile.readText())
+                append("Return code: ").appendLine(process.exitValue()).appendLine()
+                appendLine(outputFile.readText())
             })
         }
     }
@@ -117,6 +117,6 @@ private val Section.args get() = readArgumentsFromArgFile(preprocessPathSeparato
 private fun preprocessPathSeparators(text: String): String = buildString {
     for (line in text.lineSequence()) {
         val transformed = if (line.startsWith("-cp ")) line.replace(':', File.pathSeparatorChar) else line
-        appendln(transformed)
+        appendLine(transformed)
     }
 }

plugins/kapt3/kapt3-cli/test/org/jetbrains/kotlin/kapt/cli/test/Section.kt

@@ -33,7 +33,7 @@ class Section(val name: String, val content: String) {
                     saveCurrent()
                     currentName = line.drop(2)
                 } else {
-                    currentContent.appendln(line)
+                    currentContent.appendLine(line)
                 }
             }
 
@@ -45,8 +45,8 @@ class Section(val name: String, val content: String) {
 
 fun List<Section>.render(): String = buildString {
     for (section in this@render) {
-        append(SECTION_INDICATOR).appendln(section.name)
-        appendln(section.content).appendln()
+        append(SECTION_INDICATOR).appendLine(section.name)
+        appendLine(section.content).appendLine()
     }
 }.trim()