Update docs to match with PBJ (#3212)

* Fixed typo

* Updated docs to match with current PBJ state.

* Added default configuration section

* Removed redundant space between parentheses

* tweaked default configs

Co-authored-by: bretg <bgorsline@gmail.com>

prebid-server/developers/add-new-bidder-java.md

@@ -78,13 +78,7 @@ Create a file with the path `static/bidder-info/{bidder}.yaml` and begin with th
 ```yaml
 adapters:
   yourBidderCode:
-    enabled: false
     endpoint: http://possible.endpoint
-    pbs-enforces-gdpr: true
-    pbs-enforces-ccpa: true
-    modifying-vast-xml-allowed: true
-    deprecated-names:
-    aliases:
     meta-info:
       maintainer-email: maintainer@email.com
       app-media-types:
@@ -109,8 +103,9 @@ adapters:
 
 Modify this template for your bid adapter:
 - Change the maintainer email address to a group distribution list on your ad server's domain. A distribution list is preferred over an individual mailbox to allow for robustness, as roles and team members naturally change.
-- Change the `modifyingVastXmlAllowed` value to `true` if you'd like to opt-in for video impression tracking.
-- Change the `enabled` value to `true` if you'd like to make your bid adapter enabled.
+- Change the `modifying-vast-xml-allowed` value to `false` if you'd like to opt out of video impression tracking. It defaults to `true`.
+- Change the `pbs-enforces-gdpr` to `false` if you'd like to disable gdpr enforcement. Defaults to `true`.
+- Change the `pbs-enforces-ccpa` to `false` if you'd like to disable ccpa enforcement. Defaults to `true`.
 - Change the `vendor-id` value to id of your bidding server as registered with the [GDPR Global Vendor List (GVL)](https://iabeurope.eu/vendor-list-tcf-v2-0/). Leave this as `0` if you are not registered with IAB Europe.
 - Remove the `capabilities` (app/site) and `mediaTypes` (banner/video/audio/native) combinations which your adapter does not support.
 - Change the `cookie-family-name` to the name which will be used for storing your user sync id within the federated cookie. Please keep this the same as your bidder name.
@@ -124,19 +119,31 @@ The url of your user syncer can make use of the following privacy policy macros
 
 - Change the `usersync:type` value to `redirect` or `iframe` specific to your bidder.
 
+### Default bidder configuration
+
+Prebid Server has default configuration for common bidder properties, which can be overriden by bidders in their
+configurations.
+
+Default configuration:
+
+```yaml
+adapter-defaults:
+  enabled: false
+  pbs-enforces-gdpr: true
+  pbs-enforces-ccpa: true
+  deprecated-names:
+  aliases: {}
+  modifying-vast-xml-allowed: true
+```
+
 ### Create bidder alias
 If you want to add bidder that is an alias of existing bidder, you need just to update configuration of parent bidder:
 
 Example of adding bidder alias:
 ```yaml
 adapters:
   yourBidderCode:
-    enabled: false
     endpoint: http://possible.endpoint
-    pbs-enforces-gdpr: true
-    pbs-enforces-ccpa: true
-    modifying-vast-xml-allowed: true
-    deprecated-names:
     aliases: 
       yourBidderAlias:
         endpoint: http://possible.alias/endpoint