Update related authentication documentation page

(cherry picked from commit bb0e000c566451605aa5f044057b37af3d6fa920)

docs/getting_started/authentication.rst

@@ -3,7 +3,7 @@
 Authenticating via OAuth
 ========================
 
-Async PRAW supports the three types of applications that can be registered on
+Async PRAW supports all three types of applications that can be registered on
 Reddit. Those are:
 
 * `Web Applications <https://github.com/reddit-archive/reddit/wiki/OAuth2-App-Types#web-app>`_
@@ -14,10 +14,10 @@ Before you can use any one of these with Async PRAW, you must first `register
 <https://www.reddit.com/prefs/apps/>`_ an application of the appropriate type
 on Reddit.
 
-If your app does not require a user context, it is :ref:`read-only <read_only_application>`.
+If your application does not require a user context, it is :ref:`read-only <read_only_application>`.
 
 Async PRAW supports the flows that each of these applications can use. The
-following table defines which tables can use which flows:
+following table defines which application types can use which flows:
 
 .. rst-class:: center_table_items
 
@@ -133,8 +133,8 @@ If you aren't actually running a website, you can follow the :ref:`refresh_token
 tutorial to learn how to obtain and use the
 initial refresh token.
 
-Whether or not you use the script there are two processes involved in obtaining
-access or refresh tokens.
+Whether or not you follow the :ref:`refresh_token` tutorial there are two processes
+involved in obtaining access or refresh tokens.
 
 .. _auth_url:
 
@@ -152,13 +152,15 @@ URL. You can do that as follows:
                         user_agent="testscript by u/fakebot3")
    print(reddit.auth.url(["identity"], "...", "permanent"))
 
-The above will output an authorization URL for a permanent token that has only
-the `identity` scope. See :meth:`.url` for more information on these
+The above will output an authorization URL for a permanent token (i.e., the resulting
+authorization will include both a short-lived ``access_token``, and a longer-lived, single
+use ``refresh_token``)that has only
+the ``identity`` scope. See :meth:`.url` for more information on these
 parameters.
 
 This URL should be accessed by the account that desires to authorize their
 Reddit access to your application. On completion of that flow, the user's
-browser will be redirected to the specified ``redirect_uri``. After extracting
+browser will be redirected to the specified ``redirect_uri``. After
 verifying the ``state`` and extracting the ``code`` you can obtain the refresh
 token via:
 
@@ -171,7 +173,7 @@ The first line of output is the ``refresh_token``. You can save this for later
 use (see :ref:`using_refresh_tokens`).
 
 The second line of output reveals the name of the Redditor that completed the
-code flow. It also indicates that the ``reddit`` instance is now associated
+code flow. It also indicates that the :class:`.Reddit` instance is now associated
 with that account.
 
 The code flow can be used with an **installed** application just as described