docs: Clarify base_path in the REST API

Author: igorlukanin

docs/pages/product/apis-integrations/rest-api/reference.mdx

@@ -5,9 +5,16 @@ redirect_from:
 
 # REST API reference
 
-[REST API][ref-rest-api] provides the following endpoints.
+The [REST API][ref-rest-api] provides the following endpoints.
 
-## `/v1/load`
+<InfoBox>
+
+The `{base_path}` part of the endpoint URLs can be [configured][ref-basepath].
+By default, it's `/cubejs-api`.
+
+</InfoBox>
+
+## `{base_path}/v1/load`
 
 Get the data for a query.
 
@@ -90,7 +97,7 @@ values.
 
 </WarningBox>
 
-## `/v1/sql`
+## `{base_path}/v1/sql`
 
 Get the SQL Code generated by Cube to be executed in the database.
 
@@ -152,7 +159,7 @@ that Cube passes to an underlying data source driver later when executing the qu
 
 </InfoBox>
 
-## `/v1/meta`
+## `{base_path}/v1/meta`
 
 Get meta-information for cubes and views defined in the data model. Information about cubes and views with `public: false` will not be returned.
 
@@ -222,7 +229,7 @@ Example response:
 }
 ```
 
-## `/v1/pre-aggregations/jobs`
+## `{base_path}/v1/pre-aggregations/jobs`
 
 Trigger pre-aggregation build jobs or retrieve statuses of such jobs.
 
@@ -378,13 +385,8 @@ Example response:
 
 ## `/readyz`
 
-Returns the ready state of the deployment.
-
-**Single-tenant:** Ensures the orchestration layer is operational and tests the
-connection to the default `dataSource`.
-
-**Multi-tenant:** Tests connections per-tenant. If no connections exist, it will
-report as successful.
+Reports if the deployment has successfully started. To do so, it will try to test
+the connection to the _default_ [data source][ref-datasources].
 
 Example of a successful request:
 
@@ -422,9 +424,8 @@ Keep-Alive: timeout=5
 
 ## `/livez`
 
-Returns the liveness state of the deployment. This is confirmed by testing any
-existing connections to `dataSource`. If no connections exist, it will report as
-successful.
+Reports if the deployment is still healthy. This is confirmed by testing any
+existing connections to data sources.
 
 Example of a successful response:
 
@@ -460,6 +461,7 @@ Keep-Alive: timeout=5
 {"health":"DOWN"}
 ```
 
-[ref-recipes-data-blending]:
-  /product/data-modeling/concepts/data-blending#data-blending
+[ref-recipes-data-blending]: /product/data-modeling/concepts/data-blending#data-blending
 [ref-rest-api]: /product/apis-integrations/rest-api
+[ref-basepath]: /product/apis-integrations/rest-api#base-path
+[ref-datasources]: /product/configuration/advanced/multiple-data-sources