Doc fixes:

  * Add a note that the user might need to do `CREATE EXTENSION postgis` when upgrading to Postgis for the first time
  * Switch demo/benchmark URLs to use the master branch instead of a pinned version
  * Elaborate on forking in TOS, link to the new account settings page for deletion and turn support mail into links.

Author: mildbyte

content/docs/0000_getting-started/0150_frequently_asked_questions.mdx

@@ -42,7 +42,7 @@ Splitgraph with [Jupyter notebooks](../integrating_splitgraph/jupyter_notebooks)
 
 ### What's the performance like? Do you have any benchmarks?
 
-We maintain a couple of Jupyter notebooks with benchmarks on [our GitHub](https://github.com/splitgraph/splitgraph/tree/v0.1.0/examples/benchmarking).
+We maintain a couple of Jupyter notebooks with benchmarks on [our GitHub](https://github.com/splitgraph/splitgraph/tree/master/examples/benchmarking).
 
 It's difficult to specify what is considered a benchmark for Splitgraph, as for a lot of operations
 one would be benchmarking PostgreSQL itself. This is why we haven't run benchmarks like [TPC-DS](http://www.tpc.org/tpcds/) on Splitgraph

content/docs/0700_integrating_splitgraph/0200_postgis.mdx

@@ -7,6 +7,7 @@ Splitgraph can also work with [PostGIS](https://postgis.net/), an extension for
 
 ```shell-session
 $ sgr engine upgrade --image splitgraph/engine:stable-postgis
+$ sgr sql "CREATE EXTENSION IF NOT EXISTS postgis"
 ```
 
-The [PostGIS example](https://github.com/splitgraph/splitgraph/tree/v0.1.0/examples/postgis) will guide you through plotting a map of votes in New York City in the 2016 US Presidential Election using Splitgraph, PostGIS and [GeoPandas](https://geopandas.org/).
+The [PostGIS example](https://github.com/splitgraph/splitgraph/tree/master/examples/postgis) will guide you through plotting a map of votes in New York City in the 2016 US Presidential Election using Splitgraph, PostGIS and [GeoPandas](https://geopandas.org/).

content/docs/0700_integrating_splitgraph/0400_dbt.mdx

@@ -22,7 +22,7 @@ Turning the source and the target schemas that dbt uses into Splitgraph reposito
 
 ## Example
 
-The [dbt example](https://github.com/splitgraph/splitgraph/tree/v0.1.0/examples/dbt) showcases
+The [dbt example](https://github.com/splitgraph/splitgraph/tree/master/examples/dbt) showcases
 running dbt against the Splitgraph engine, using Splitgraph to swap between different versions of the
 source dataset and looking at their effect on the built dbt model.
 

content/root/privacy.mdx

@@ -57,4 +57,4 @@ Although most changes are likely to be minor, Splitgraph may change our Privacy
 
 ## Contact
 
-If you have questions about how we handle your data please email support@splitgraph.com.
+If you have questions about how we handle your data please email [support@splitgraph.com](mailto:support@splitgraph.com).

content/root/terms.mdx

@@ -128,7 +128,7 @@ We have the right (though not the obligation) to refuse or remove any User-Gener
 
 You retain ownership of and responsibility for Your Content. If you're posting anything you did not create yourself or do not own the rights to, you agree that you are responsible for any Content you post; that you will only submit Content that you have the right to post; and that you will fully comply with any third party licenses relating to Content you post.
 
-Because you retain ownership of and responsibility for Your Content, we need you to grant us — and other Splitgraph Users — certain legal permissions (laid out below). These license grants apply to Your Content. If you upload Content that already comes with a license granting Splitgraph the permissions we need to run our Service, no additional license is required. You understand that you will not receive any payment for any of the rights granted. The licenses you grant to us will end when you remove Your Content from our servers, unless other Users have forked it.
+Because you retain ownership of and responsibility for Your Content, we need you to grant us — and other Splitgraph Users — certain legal permissions (laid out below). These license grants apply to Your Content. If you upload Content that already comes with a license granting Splitgraph the permissions we need to run our Service, no additional license is required. You understand that you will not receive any payment for any of the rights granted. The licenses you grant to us will end when you remove Your Content from our servers, unless other Users have forked it by, for example, building a derivative dataset from it that's hosted on our platform.
 
 ### License Grant to Us
 
@@ -176,7 +176,7 @@ If we have reason to believe the contents of a private repository are in violati
 
 ## Copyright Infringement
 
-If you believe that content on our website violates your copyright, please contact us by emailing support@splitgraph.com. There may be legal consequences for sending a false or frivolous takedown notice. Before sending a takedown request, you must consider legal uses such as fair use and licensed uses.
+If you believe that content on our website violates your copyright, please contact us by emailing [support@splitgraph.com](mailto:support@splitgraph.com). There may be legal consequences for sending a false or frivolous takedown notice. Before sending a takedown request, you must consider legal uses such as fair use and licensed uses.
 
 ## Intellectual Property Notice
 
@@ -204,7 +204,7 @@ Splitgraph may offer subscription-based access to our API for those Users who re
 
 ### Account Cancellation
 
-It is your responsibility to properly cancel your Account with Splitgraph. You can cancel your Account at any time by emailing support@splitgraph.com.
+It is your responsibility to properly cancel your Account with Splitgraph. You can cancel your Account at any time on the [Account Settings page](/settings/account) page or by emailing [support@splitgraph.com](mailto:support@splitgraph.com).
 
 ### Upon Cancellation