Update links

Author: quinntracy

content/en/docs/marketplace/platform-supported-content/modules/external-database-connector.md

@@ -87,9 +87,9 @@ For example: `*Database*_DBsource.`
 Values for these constants are stored in the active configuration of the user. The password is stored as a private value.
 
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-Constants are an environment variable whose values can differ per environment, When you deploy an app on Mendix Cloud, values for constants are not added. For more information, see [Constants](https://docs.mendix.com/refguide/configuration/#constants).
+Constants are an environment variable whose values can differ per environment, When you deploy an app on Mendix Cloud, values for constants are not added. For more information, see [Constants](/refguide/configuration/#constants).
 
-For free apps, make sure to add the default values to the constant in Studio Pro. For more information, see the [Deploying a Free App](https://docs.mendix.com/developerportal/deploy/mendix-cloud-deploy/deploying-an-app/#deploy-free-app) section below. {{% /alert %}}
+For free apps, make sure to add the default values to the constant in Studio Pro. For more information, see the [Deploying a Free App](/developerportal/deploy/mendix-cloud-deploy/deploying-an-app/#deploy-free-app) section of *Deploying an App to Mendix Cloud*. {{% /alert %}}
 
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 From Studio Pro 11.1, you can provide dynamic values to connection properties using connection parameters in the Query External Database activity. {{% /alert %}}
@@ -98,7 +98,7 @@ From Studio Pro 11.1, you can provide dynamic values to connection properties us
 
 When the connection is successful and saved, you can search the **Browse database** tab for Tables, Views, Procedures, and Functions.
 
-{{< figure src="http://attachments/refguide/modeling/integration/use-platform-supported-content/use-the-external-database-connector/3.png" width="700" >}}
+{{< figure src="/attachments/refguide/modeling/integration/use-platform-supported-content/use-the-external-database-connector/3.png" width="700" >}}
 
 ## Querying a Database {#query-database}