Fix typos in documentation.

Closes: #151.

Author: elprans

docs/faq.rst

@@ -14,7 +14,7 @@ Does asyncpg support DB-API?
 
 Can I use asyncpg with SQLAlchemy ORM?
     Short answer: no.  asyncpg uses asynchronous execution model
-    and API, which is fundamentally incompatible with asyncpg.
+    and API, which is fundamentally incompatible with SQLAlchemy.
     However, it is possible to use asyncpg and SQLAlchemy Core
     with the help of a third-party adapter, such as asyncpgsa_.
 

docs/usage.rst

@@ -93,12 +93,12 @@ The table below shows the correspondence between PostgreSQL and Python types.
 +----------------------+-----------------------------------------------------+
 | ``cidr``             | :class:`ipaddress.IPv4Network\                      |
 |                      | <python:ipaddress.IPv4Network>`,                    |
-|                      | :class:`ipaddress.IPv6Netowrk\                      |
+|                      | :class:`ipaddress.IPv6Network\                      |
 |                      | <python:ipaddress.IPv6Network>`                     |
 +----------------------+-----------------------------------------------------+
 | ``inet``             | :class:`ipaddress.IPv4Network\                      |
 |                      | <python:ipaddress.IPv4Network>`,                    |
-|                      | :class:`ipaddress.IPv6Netowrk\                      |
+|                      | :class:`ipaddress.IPv6Network\                      |
 |                      | <python:ipaddress.IPv6Network>`,                    |
 |                      | :class:`ipaddress.IPv4Address\                      |
 |                      | <python:ipaddress.IPv4Address>`,                    |