OAuth Endpoint Description Awkward

[RobertKeyser]

The phrasing of the description for /api/v1/oauth/token is a bit awkward.

fidesops/src/fidesops/api/v1/endpoints/oauth_endpoints.py

Lines 56 to 57 in 8be7d15

	"""Given a set of credentials, returns an access token if they are correct. Raises 401
	exception if not"""

This clarifies that the "if not" has to do with the credentials and also adds a period.

- """Given a set of credentials, returns an access token if they are correct. Raises 401 exception if not"""
+    """Given a set of credentials, returns an access token if they are correct. Raises 401 exception if they are not."""