Fix signature file in InternalDescTest

It had some additional leading spaces which is not supported.

Bug: 295577788
Test: ./gradlew
Change-Id: I5077ab2fe3e67481afc77e58851ee6dee9f4487d
diff --git a/src/test/java/com/android/tools/metalava/apilevels/InternalDescTest.kt b/src/test/java/com/android/tools/metalava/apilevels/InternalDescTest.kt
index c7289c1..6d90d1c 100644
--- a/src/test/java/com/android/tools/metalava/apilevels/InternalDescTest.kt
+++ b/src/test/java/com/android/tools/metalava/apilevels/InternalDescTest.kt
@@ -28,13 +28,13 @@
         val signature =
             """
                 // Signature format: 2.0
-                 package test.pkg {
-                   public class Test {
-                     ctor public Test();
-                     method public abstract boolean foo(test.pkg.Test, int...);
-                     method public abstract void bar(test.pkg.Test... tests);
-                   }
-                 }
+                package test.pkg {
+                  public class Test {
+                    ctor public Test();
+                    method public abstract boolean foo(test.pkg.Test, int...);
+                    method public abstract void bar(test.pkg.Test... tests);
+                  }
+                }
              """
         ApiFile.parseApi("test", signature.trimIndent()).let {
             val testClass = it.findClass("test.pkg.Test")