Change name of droiddoc target output to *-stubs.srcjar

Test: m -j core-docs
Bug: b/70351683
Change-Id: If8c00a9992d262b7cd4c95794073591dcc245bd2
diff --git a/java/java_test.go b/java/java_test.go
index eda229b..8bae019 100644
--- a/java/java_test.go
+++ b/java/java_test.go
@@ -886,8 +886,8 @@
 		}
 		`)
 
-	stubsJar := filepath.Join(buildDir, ".intermediates", "bar-doc", "android_common", "bar-doc-stubs.jar")
-	barDoc := ctx.ModuleForTests("bar-doc", "android_common").Output("bar-doc-stubs.jar")
+	stubsJar := filepath.Join(buildDir, ".intermediates", "bar-doc", "android_common", "bar-doc-stubs.srcjar")
+	barDoc := ctx.ModuleForTests("bar-doc", "android_common").Output("bar-doc-stubs.srcjar")
 	if stubsJar != barDoc.Output.String() {
 		t.Errorf("expected stubs Jar [%q], got %q", stubsJar, barDoc.Output.String())
 	}