libhidl_gtest_helpers -> libhidl_gtest_helper

Singular name is more common.

Bug: N/A
Test: N/A
Change-Id: I9995101c4fe0e7d1f4b0da4841538a472d07a8c0
diff --git a/Android.bp b/Android.bp
index 819732d..9207656 100644
--- a/Android.bp
+++ b/Android.bp
@@ -30,8 +30,8 @@
 }
 
 cc_library_headers {
-    name: "libhidl_gtest_helpers",
-    export_include_dirs: ["gtest_helpers"],
+    name: "libhidl_gtest_helper",
+    export_include_dirs: ["gtest_helper"],
 }
 
 cc_test {