squash! address review comments

Author: Gabriel Schulhof

doc/api/n-api.md

@@ -46,17 +46,14 @@ example is: [node-addon-api](https://github.com/nodejs/node-addon-api).
 
 Although N-API provides an ABI stability guarantee, other parts of Node.js do
 not, and any external libraries used from the addon may not. In particular,
-neither of the following Node.js APIs provides an ABI stability guarantee:
+none of the following APIs provide an ABI stability guarantee across major
+versions:
 * the Node.js C++ APIs available via any of
     ```C++
+    #include <node.h>
     #include <node_buffer.h>
-    #include <node_context_data.h>
-    #include <node_contextify.h>
-    #include <node_mutex.h>
-    #include <node_object_wrap.h>
-    #include <node_perf_common.h>
-    #include <node_platform.h>
     #include <node_version.h>
+    #include <node_object_wrap.h>
     ```
 * the libuv APIs which are also included with Node.js and available via
     ```C++
@@ -72,7 +69,7 @@ must make use exclusively of N-API by restricting itself to using
 ```C
 #include <node_api.h>
 ```
-and by checking, for all external library that it uses, that the external
+and by checking, for all external libraries that it uses, that the external
 library makes ABI stability guarantees similar to N-API.
 
 ## Usage