feat: updated docs to include tcp check endpoint - [sc-00] (checkly#1214

)

* feat: updated docs to include tcp check endpoint - [sc-00]

* chore: fix typo

site/content/docs/analytics/_index.md

@@ -27,9 +27,10 @@ or keep reading for more examples!
 
 There are three main endpoints.
 
-1. `/v1/analytics/metrics/`: returns all the available metrics for a specific check-type (`API` or `BROWSER`)
+1. `/v1/analytics/metrics/`: returns all the available metrics for a specific check-type (`API`, `TCP` or `BROWSER`)
 2. `/v1/analytics/browser-checks/{checkId}`: returns metrics for Browser checks. 
 3. `/v1/analytics/api-checks/{checkId}`: returns metrics for API checks.
+4. `/v1/analytics/tcp-checks/{checkId}`: returns metrics for TCP checks.
 
 The specific endpoints per check type return a JSON response that includes a check's attributes, period requested, 
 grouped `series` and a `metadata` section where you'll have additional information about the metrics to create rich reports.