docs(usage-view): rename example table in postgres, make it clear it's not a graphql api

Signed-off-by: Michal Wasilewski <michal@mwasilewski.net>

Author: mwasilew2

docs/product/billing/usage.md

@@ -11,7 +11,7 @@ Usage data can be downloaded:
 
 - from the Usage page: Organization Settings -> Other -> Usage
 - using [spacectl](https://github.com/spacelift-io/spacectl) command: `spacectl profile usage-csv`
-- via the Spacelift API
+- via the Spacelift API at `https://<your-spacelift-host>/usageanalytics/csv` (note: this is not a graphql endpoint)
 
 ## Analyzing Usage Data
 
@@ -20,7 +20,7 @@ Usage data can be downloaded:
 Create a table for worker count and load the CSV file into the table:
 
 ```sql
-create table worker_info (
+create table worker_count (
   id int,
   count int,
   timestamp_unix int,
@@ -29,7 +29,7 @@ create table worker_info (
 ```
 
 ```shell
-psql -h <host> -U <user> -d <database> -c "\copy worker_info from '<path-to-csv-file>' delimiter ',' csv header"
+psql -h <host> -U <user> -d <database> -c "\copy worker_count from '<path-to-csv-file>' delimiter ',' csv header"
 ```
 
 And the same for run minutes: