Update language to comply with Android's inclusive language guidance

See https://source.android.com/setup/contribute/respectful-code for reference

Bug: 161896447
Test: None
Change-Id: I05f296357c7993088190ef45e49fb8e3a02559d6
diff --git a/cc/ndk_library.go b/cc/ndk_library.go
index 6299b00..1e7f2e5 100644
--- a/cc/ndk_library.go
+++ b/cc/ndk_library.go
@@ -397,8 +397,8 @@
 	return module
 }
 
-// ndk_library creates a stub library that exposes dummy implementation
-// of functions and variables for use at build time only.
+// ndk_library creates a library that exposes a stub implementation of functions
+// and variables for use at build time only.
 func NdkLibraryFactory() android.Module {
 	module := newStubLibrary()
 	android.InitAndroidArchModule(module, android.DeviceSupported, android.MultilibBoth)