Remove optional settings from sdk-config.json and point at the doc (#491)

* Remove optional settings from sdk-config.json and point at the relevant document

* Updated on the basis of the review comments

* Added separation among different sections

---------

Co-authored-by: Vishal <[email protected]>

Author: vishalshrm539

sdk-config.json

@@ -1,9 +1,8 @@
 {
   "comment_sdk_config": "This is the configuration file for the React SDK",
+  "sdk_optional_configs_doc_comment": "See the document(link below) for more details on all the available config settings",
+  "sdk_optional_configs_doc": "https://docs.pega.com/bundle/constellation-sdk/page/constellation-sdks/sdks/configuring-sdk-config-json.html",
   "authConfig": {
-    "authConfig_comment": "Optional Full paths to Infinity server OAuth endpoints (Only needed if using custom OAuth service)",
-    "authConfig_comment2": "Optional attributes are: authorize, token, revoke, redirectUri, authService, silentTimeout, iframeLoginUI,",
-    "authConfig_comment3": "mashupAuthService, portalGrantType, mashupGrantType, portalClientSecret, mashupClientSecret, tokenStorage",
     "authService": "pega",
 
     "mashupClient_comment": "Client ID and Client secret from the OAuth 2.0 Client Registration record used for mashup use case",
@@ -16,6 +15,7 @@
     "portalClientId_comment": "Client ID from the OAuth 2.0 Client Registration record used for portal use case",
     "portalClientId": "25795373220702300272"
   },
+
   "serverConfig": {
     "infinityRestServerUrl_comment": "Full path to Infinity REST server",
     "infinityRestServerUrl": "https://localhost:1080/prweb",
@@ -35,6 +35,7 @@
     "excludePortals_comment": "Array of specific portals to avoid attempting to load with SDK",
     "excludePortals": ["pxExpress", "Developer", "pxPredictionStudio", "pxAdminStudio", "pyCaseWorker", "pyCaseManager7"]
   },
+
   "dxcbConfig": {
     "publishAccess": {
       "rulesetName": "CustomDXComponents",