Out of date documentation

[arobsco]

Subject of the issue

DEVELOPER_GUIDE.MD has out of date information:

experience-platform-streaming-connect/DEVELOPER_GUIDE.md

Line 40 in a050275

| aep.connection.auth.token.type | always set to access_token | access_token | no | |

aep.connection.auth.token.type should always be access_token however this is not the case if using OAUTH S2S. It should be oauth2_access_token

experience-platform-streaming-connect/DEVELOPER_GUIDE.md

Line 42 in a050275

| aep.connection.auth.client.code | IMS client code | | no | |

aep.connection.auth.client.code is very non descript and unclear what this actually refers to. It would be appreciated if the definition of this variable could be clarified and made clearer. Ideally conforming to the same naming conventions as in Developer Console.