libbinder_ndk: doc waitForService waits

This doc incorrectly stated before that this API will wait forever
if a service is not declared, but actually it has nothing to do
with whether the service is declared. The idea was that if a service
is not declared (and therefore not installed) it will wait forever.
However, we should just not mention whether the service is declared
and focus on whether the service is installed or not because that
will determine whether this API returns.

Bug: N/A
Test: N/A

Change-Id: Id07b5b5653a5b40b4c0d5a7e4f88e6b2440fff0a
diff --git a/libs/binder/ndk/include_platform/android/binder_manager.h b/libs/binder/ndk/include_platform/android/binder_manager.h
index 89fd7a3..316a79c 100644
--- a/libs/binder/ndk/include_platform/android/binder_manager.h
+++ b/libs/binder/ndk/include_platform/android/binder_manager.h
@@ -120,7 +120,7 @@
 
 /**
  * Gets a binder object with this specific instance name. Efficiently waits for the service.
- * If the service is not declared, it will wait indefinitely. Requires the threadpool
+ * If the service is not ever registered, it will wait indefinitely. Requires the threadpool
  * to be started in the service.
  * This also implicitly calls AIBinder_incStrong (so the caller of this function is responsible
  * for calling AIBinder_decStrong).