doc: cleanup n-api.md doc

Partial doc cleanup as per
https://github.com/nodejs/node/issues/20421

PR-URL: https://github.com/nodejs/node/pull/20430
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Gabriel Schulhof <gabriel.schulhof@intel.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/api/n-api.md

@@ -40,7 +40,7 @@ there to be one or more C++ wrapper modules that provide an inlineable C++
 API. Binaries built with these wrapper modules will depend on the symbols
 for the N-API C based functions exported by Node.js. These wrappers are not
 part of N-API, nor will they be maintained as part of Node.js. One such
-example is: [node-api](https://github.com/nodejs/node-api).
+example is: [node-addon-api](https://github.com/nodejs/node-addon-api).
 
 In order to use the N-API functions, include the file
 [`node_api.h`](https://github.com/nodejs/node/blob/master/src/node_api.h)
@@ -73,7 +73,9 @@ typedef enum {
   napi_generic_failure,
   napi_pending_exception,
   napi_cancelled,
-  napi_status_last
+  napi_escape_called_twice,
+  napi_handle_scope_mismatch,
+  napi_callback_scope_mismatch
 } napi_status;
 ```
 If additional information is required upon an API returning a failed status,
@@ -589,7 +591,7 @@ that has a loop which iterates through the elements in a large array:
 ```C
 for (int i = 0; i < 1000000; i++) {
   napi_value result;
-  napi_status status = napi_get_element(e, object, i, &result);
+  napi_status status = napi_get_element(env, object, i, &result);
   if (status != napi_ok) {
     break;
   }
@@ -626,7 +628,7 @@ for (int i = 0; i < 1000000; i++) {
     break;
   }
   napi_value result;
-  status = napi_get_element(e, object, i, &result);
+  status = napi_get_element(env, object, i, &result);
   if (status != napi_ok) {
     break;
   }
@@ -2486,10 +2488,10 @@ performed using a N-API call).
 property to be a JavaScript function represented by `method`. If this is
 passed in, set `value`, `getter` and `setter` to `NULL` (since these members
 won't be used).
-- `data`: The callback data passed into `method`, `getter` and `setter` if
-this function is invoked.
 - `attributes`: The attributes associated with the particular property.
 See [`napi_property_attributes`](#n_api_napi_property_attributes).
+- `data`: The callback data passed into `method`, `getter` and `setter` if
+this function is invoked.
 
 ### Functions
 #### napi_get_property_names