chore: use "Postgres" not PostgreSQL in docs (#117)

Author: enocom

README.md

@@ -1,10 +1,10 @@
 # Cloud SQL Connector for Python Drivers
-**Warning**: This project is currently in _alpha_, and releases may contain breaking API changes. 
+**Warning**: This project is currently in _alpha_, and releases may contain breaking API changes.
 
 The Cloud SQL Python Connector is a library that can be used alongside a database driver to allow users with sufficient permissions to connect to a Cloud SQL
 database without having to manually allowlist IPs or manage SSL certificates.
 
-Currently supported drivers are 
+Currently supported drivers are
  - [`pymysql`](https://github.com/PyMySQL/PyMySQL) (MySQL)
  - [`pg8000`](https://github.com/tlocke/pg8000) (PostgreSQL)
  - [`pytds`](https://github.com/denisenkom/pytds) (SQL Server)
@@ -54,7 +54,7 @@ Use the connector to create a connection object by calling the connect method. I
 
 ```
 conn = connector.connect(
-    "project:region:instance", 
+    "project:region:instance",
     "pymysql",
     user="root",
     password="shhh",
@@ -98,24 +98,24 @@ engine = sqlalchemy.create_engine(
 **Note for SQL Server users**: If your SQL Server instance requires SSL, you need to download the CA certificate for your instance and include `cafile={path to downloaded certificate}` and `validate_host=False`. This is a workaround for a [known issue](https://issuetracker.google.com/184867147).
 
 ### Specifying Public or Private IP
-The Cloud SQL Connector for Python can be used to connect to Cloud SQL instances using both public and private IP addresses. To specify which IP address to use to connect, set the `ip_type` keyword argument Possible values are `IPTypes.PUBLIC` and `IPTypes.PRIVATE`. 
+The Cloud SQL Connector for Python can be used to connect to Cloud SQL instances using both public and private IP addresses. To specify which IP address to use to connect, set the `ip_type` keyword argument Possible values are `IPTypes.PUBLIC` and `IPTypes.PRIVATE`.
 Example:
 ```
 connector.connect(
-    "project:region:instance", 
+    "project:region:instance",
     "pymysql",
     ip_types=IPTypes.PRIVATE # Prefer private IP
 ... insert other kwargs ...
 )
 ```
 
-Note: If specifying Private IP, your application must already be in the same VPC network as your Cloud SQL Instance. 
+Note: If specifying Private IP, your application must already be in the same VPC network as your Cloud SQL Instance.
 
 ### IAM Authentication
-Connections using [IAM database authentication](https://cloud.google.com/sql/docs/postgres/iam-logins) are supported when using the PostgreSQL driver.
+Connections using [IAM database authentication](https://cloud.google.com/sql/docs/postgres/iam-logins) are supported when using the Postgres driver.
 This feature is unsupported for other drivers.
-First, make sure to [configure your Cloud SQL Instance to allow IAM authentication](https://cloud.google.com/sql/docs/postgres/create-edit-iam-instances#configure-iam-db-instance) and [add an IAM database user](https://cloud.google.com/sql/docs/postgres/create-manage-iam-users#creating-a-database-user). 
-Now, you can connect using user or service account credentials instead of a password. 
+First, make sure to [configure your Cloud SQL Instance to allow IAM authentication](https://cloud.google.com/sql/docs/postgres/create-edit-iam-instances#configure-iam-db-instance) and [add an IAM database user](https://cloud.google.com/sql/docs/postgres/create-manage-iam-users#creating-a-database-user).
+Now, you can connect using user or service account credentials instead of a password.
 In the call to connect, set the `enable_iam_auth` keyword argument to true and `user` to the email address associated with your IAM user.
 Example:
 ```
@@ -131,7 +131,7 @@ connector.connect(
 
 Tests can be run with `nox`. Change directory into the `cloud-sql-python-connector` and just run `nox` to run the tests.
 
-1. Create a MySQL instance on Google Cloud SQL. Make sure to note your root password when creating the MySQL instance. 
+1. Create a MySQL instance on Google Cloud SQL. Make sure to note your root password when creating the MySQL instance.
 2. When the MySQL instance has finished creating, go to the overview page and set the instance’s connection string to the environment variable MYSQL_CONNECTION_NAME using the following command:
 ```
 export MYSQL_CONNECTION_NAME=your:connection:string

google/cloud/sql/connector/connector.py

@@ -75,7 +75,7 @@ def connect(
         can be either IPTypes.PUBLIC or IPTypes.PRIVATE.
 
     :param enable_iam_auth
-    Enables IAM based authentication (PostgreSQL only).
+    Enables IAM based authentication (Postgres only).
     :type enable_iam_auth: bool
 
     :param kwargs: