doc(gcplog): Fix titles for Cloud provisioning for GCP logs (#3190)

docs/sources/clients/promtail/gcplog-cloud.md

@@ -1,16 +1,20 @@
 ---
-title: Cloud setup for gcplog TargetManager
+title: Cloud setup GCP Logs
 ---
+# Cloud setup GCP logs
+
 This document explain how one can setup Google Cloud Platform to forward its cloud resource logs from a particular GCP project into Google Pubsub topic so that is available for Loki promtail to consume.
 
 This document assumes, that reader have `gcloud` installed and have required permissions(as mentioned in #[Roles and Permission] section)
 
-# Roles and Permission
+## Roles and Permission
+
 User should have following roles to complete the setup.
 - "roles/pubsub.editor"
 - "roles/logging.configWriter"
 
-# Setup Pubsub Topic
+## Setup Pubsub Topic
+
 Google Pubsub Topic will act as the queue to persist log messages which then can be read from `promtail`.
 
 ```bash
@@ -22,7 +26,8 @@ e.g:
 $ gcloud pubsub topics create cloud-logs
 ```
 
-# Setup Log Router
+## Setup Log Router
+
 We create a log sink to forward cloud logs into pubsub topic created before
 
 ```bash
@@ -39,7 +44,8 @@ $ gcloud beta logging sinks create cloud-logs pubsub.googleapis.com/projects/my-
 Above command also adds `log-filter` option which represents what type of logs should get into the destination `pubsub` topic.
 For more information on adding `log-filter` refer this [document](https://cloud.google.com/logging/docs/export/configure_export_v2#creating_sink)
 
-# Create Pubsub subscription for Loki
+## Create Pubsub subscription for Loki
+
 We create subscription for the pubsub topic we create above and `promtail` uses this subscription to consume log messages.
 
 ```bash
@@ -57,7 +63,8 @@ $ gcloud pubsub subscriptions create cloud-logs --topic=pubsub.googleapis.com/pr
 
 For more fine grained options, refer to the `gcloud pubsub subscriptions --help`
 
-# ServiceAccount for Promtail
+## ServiceAccount for Promtail
+
 We need a service account with following permissions.
 - pubsub.subscriber