chore(docs): update profiles.yaml example

Author: janmatzek

docs/content/en/latest/getting-started.md

@@ -42,14 +42,19 @@ Start integrating GoodData into your Python application right now.
     profiles.yaml file structure example:
 
     ```yaml
-    default:
-        host: http://localhost:3000
-        token: YWRtaW46Ym9vdHN0cmFwOmFkbWluMTIz
-        custom_headers: #optional
-            Host: localhost
-        extra_user_agent: xyz #optional
+    profiles:
+        dev:
+            host: http://localhost:3000
+            token: $GOODDATA_API_TOKEN_DEV
+            custom_headers: #optional
+                Host: localhost
+            extra_user_agent: xyz #optional
+    default_profile: dev
+    access: {}
     ```
 
+    The `token` field expects a reference to an environment variable containing your personal access token.
+
 1. Start using Python SDK! For example, get a list of all workspaces:
 
     ```python

gooddata-sdk/gooddata_sdk/utils.py

@@ -283,12 +283,14 @@ def _create_profile_aac(profile: str, content: dict) -> dict:
 def _get_profile(profile: str, content: dict) -> dict[str, Any]:
     is_aac_config = AacConfig.can_structure(content)
     if not is_aac_config and profile not in content:
-        raise ValueError("Configuration is invalid. Please check the documentation for the valid configuration.")
+        raise ValueError(
+            "Configuration is invalid. Please check the documentation for the valid configuration: https://www.gooddata.com/docs/python-sdk/latest/getting-started/"
+        )
     if is_aac_config:
         return _create_profile_aac(profile, content)
     else:
         warn(
-            "Used configuration is deprecated and will be removed in the future. Please use the new configuration.",
+            "Used configuration is deprecated and will be removed in the future. Please use the new configuration: https://www.gooddata.com/docs/python-sdk/latest/getting-started/",
             DeprecationWarning,
             stacklevel=2,
         )