Prefer the app-developer targetSdkVersion over "api level".

Only really matters in the errors shown to app developers, but we may as well be consistent throughout, especially since we almost always are anyway!

Change-Id: I37cce9d4de76579084b9f64df881b5ec6e6b3efd
diff --git a/linker/linker_soinfo.cpp b/linker/linker_soinfo.cpp
index 176c133..b626313 100644
--- a/linker/linker_soinfo.cpp
+++ b/linker/linker_soinfo.cpp
@@ -811,7 +811,7 @@
 
 // This function returns api-level at the time of
 // dlopen/load. Note that libraries opened by system
-// will always have 'current' api level.
+// will always have 'current' target sdk version.
 int soinfo::get_target_sdk_version() const {
   if (!has_min_version(2)) {
     return __ANDROID_API__;