Default configuration value keys are wrong in README

[seansund]

The README provides a table of keys that can be provided for the ibmcloud-operator-defaults ConfigMap. The keys provided in the table are wrong (at least they don't agree with the configure-operator.sh script.

Here's what is currently in the README -

Field	Required	Type	Description
org	No	string	The Cloud Foundry org. To list orgs, run ibmcloud account orgs.
space	No	string	The Cloud Foundry space. To list spaces, run ibmcloud account spaces.
region	No	string	The IBM Cloud region. To list regions, run ibmcloud regions.
resourceGroupID	No	string	The IBM Cloud resource group ID. To list resource groups, run ibmcloud resource groups.
resourceLocation	No	string	The location of the resource.

Here's what the configure-operator.sh script contains (and confirmed as accurate by deployment):

Field	Required	Type	Description
org	No	string	The Cloud Foundry org. To list orgs, run ibmcloud account orgs.
space	No	string	The Cloud Foundry space. To list spaces, run ibmcloud account spaces.
region	No	string	The IBM Cloud region. To list regions, run ibmcloud regions.
resourcegroupid	No	string	The IBM Cloud resource group ID. To list resource groups, run ibmcloud resource groups.
resourcelocation	No	string	The location of the resource.

(Notice the case of the resourcegroupid and resourcelocation values)