Minor, fix several CLI argument descriptions

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.kt

@@ -144,7 +144,7 @@ abstract class CommonCompilerArguments : CommonToolArguments() {
     @Argument(
         value = "-Xuse-experimental",
         valueDescription = "<fq.name>",
-        description = "Enable usages of COMPILATION-affecting experimental API for marker annotation with the given fully qualified name"
+        description = "Enable, but don't propagate usages of experimental API for marker annotation with the given fully qualified name"
     )
     var useExperimental: Array<String>? by FreezableVar(null)
 

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/K2JVMCompilerArguments.kt

@@ -231,7 +231,7 @@ class K2JVMCompilerArguments : CommonCompilerArguments() {
                 "-Xjvm-default=enable          Allow usages of @JvmDefault; only generate the default method\n" +
                 "                              in the interface (annotating an existing method can break binary compatibility)\n" +
                 "-Xjvm-default=compatibility   Allow usages of @JvmDefault; generate a compatibility accessor\n" +
-                "                              in the 'DefaultImpls' class in addition to the interface method\n"
+                "                              in the 'DefaultImpls' class in addition to the interface method"
     )
     var jvmDefault: String by FreezableVar(JvmDefaultMode.DEFAULT.description)