Docs: Single source getting started step (#32812)

* single sourcing

* Update getting-started-sql.md

docs/sources/getting-started/getting-started-prometheus.md

@@ -12,16 +12,12 @@ Prometheus is an open source systems monitoring system for which Grafana provide
 
 You can also configure a [Grafana Cloud](https://grafana.com/docs/grafana-cloud/) instance to display system metrics without having to host Grafana yourself.
 
-## Step 1. Install Grafana and build your first dashboard
-
-Use the instructions in [Getting started with Grafana]({{< relref "getting-started.md" >}}) to:
-- Install Grafana.
-- Log in to Grafana.
-- Create your first dashboard.
+{{< docs/shared "getting-started/first-step.md" >}}
 
 ## Step 2. Download Prometheus and node_exporter
 
 Prometheus, like Grafana, can be installed on many different operating systems. Refer to the [Prometheus download page](https://prometheus.io/download/), which lists all stable versions of Prometheus components. Download the following components:
+
  - [Prometheus](https://prometheus.io/download/#prometheus)
  - [node_exporter](https://prometheus.io/download/#node_exporter)
 

docs/sources/getting-started/getting-started-sql.md

@@ -9,12 +9,9 @@ weight = 400
 # Getting started with Grafana and MS SQL Server
 
 Microsoft SQL Server is a popular relational database management system that is widely used in development and production environments. This topic walks you through the steps to create a series of dashboards in Grafana to display metrics from a MS SQL Server database. You can also configure the MS SQL Server data source on a [Grafana Cloud](https://grafana.com/docs/grafana-cloud/) instance without having to host Grafana yourself.
-## Step 1. Install Grafana and build your first dashboard
 
-Use the instructions in [Getting started with Grafana]({{< relref "getting-started.md" >}}) to:
-- Install Grafana.
-- Log in to Grafana.
-- Create your first dashboard.
+{{< docs/shared "getting-started/first-step.md" >}}
+
 > **Note:** You must install Grafana 5.1+ in order to use the integrated MS SQL data source.
 
 ## Step 2. Download MS SQL Server
@@ -52,8 +49,8 @@ To add MS SQL Server data source:
 
 1. In the Grafana side menu, hover your cursor over the **Configuration** (gear) icon and then click **Data Sources**.
 1. Filter by `mssql` and select the **Microsoft SQL Server** option.
-2. Click **Add data source** in the top right header to open the configuration page.
-3. Enter the information specified in the table below, then click **Save & Test**.
+1. Click **Add data source** in the top right header to open the configuration page.
+1. Enter the information specified in the table below, then click **Save & Test**.
    
  Name           | Description
 ------------   | -------------
@@ -73,6 +70,7 @@ Optionally, play around this dashboard and customize it to:
 - Change frequency of data polling.
 - Change the period for which the data is displayed.
 - Rearrange and resize panels.
+
 ## Step 5. Start building dashboards
 
 Now that you have gained some idea of using the pre-packaged MS SQL data source and some test data, the next step is to setup your own instance of MS SQL Server database and data your development or sandbox area. In the previous steps, if you followed along the path of deploying your own instance of MS SQL Server, you are already on your way.

docs/sources/shared/getting-started/first-step.md

@@ -0,0 +1,13 @@
+---
+title: First step of Getting started with...
+---
+
+## Step 1. Install Grafana and build your first dashboard
+
+Use the instructions in [Getting started with Grafana]({{< relref "../../getting-started/getting-started.md" >}}) to:
+
+- Install Grafana.
+- Log in to Grafana.
+- Create your first dashboard.
+
+You can also configure a [Grafana Cloud](https://grafana.com/docs/grafana-cloud/) instance to display system metrics without having to host Grafana yourself.