Fix links

docs/index.md

@@ -16,7 +16,6 @@ Trustchain is free and open source software. The setup and operational costs of
 
  
 
-
 # Trustchain Mobile
 
 Trustchain Mobile is a mobile app built to demonstrate the Trustchain user experience from the perspective of a holder and/or verifier of digital credentials. It is a fork of the Credible credential wallet app developed by [SpruceID](https://www.spruceid.dev/).

docs/ion.md

@@ -29,7 +29,7 @@ Before beginning the installation, a few decisions must be made that will determ
 
 The simplest way to run ION is using Docker, and it can be a useful way to experiment with the system before performing a full installation. However, this method provides a **read-only ION node**. This means that it provides access to existing DIDs, but cannot be used to create and publish new ones.
 
-If you would like to be able to use Trustchain to create and publish your own DIDs, follow the full installation instructions below (and ignore the [ION with Docker](#ion-with-docker) section).
+If you would like to be able to use Trustchain to create and publish your own DIDs, follow the full installation instructions below (and ignore the [ION with Docker](#ion-using-docker) section).
 
 If you want to run ION using Docker, you can skip most of this page and just follow the instructions in the [ION with Docker](#ion-with-docker) section.
 
@@ -391,7 +391,7 @@ $ cd ion
 
 !!! tip "Create the `ION_REPO` environment variable"
 
-    Since we will need to refer to this folder in future, let's create an [environment variable](#environment-variables) containing its file path:
+    Since we will need to refer to this folder in future, let's create an [environment variable](getting-started.md#environment-variables) containing its file path:
     ```console
     $ echo "export ION_REPO=" $(pwd) | sed 's/= /=/g' >> $SHELL_CONFIG; source $SHELL_CONFIG
     ```

docs/usage.md

@@ -8,7 +8,7 @@ Depending on your role within the network of Trustchain users you may need to pe
 
     To use the Trustchain CLI, first make sure that you have followed the installation and configuration instructions on the [Getting Started](getting-started.md) page.
 
-    Also, your ION node will need to be up and running, either locally or on a remote machine to which the user is connected via SSH and with port forwarding. Instructions for restarting ION, and setting up port forwarding, can be found [here](ion.md#restarting-ion).
+    Also, your ION node will need to be up and running, either locally or on a remote machine to which the user is connected via SSH and with port forwarding. Instructions for restarting ION, and setting up port forwarding, can be found [here](ion.md#running-ion).
 
 ## Trustchain CLI
 
@@ -196,7 +196,7 @@ The second step is for the dDID controller to attest to the DID by adding their
 
 #### Attest to the dDID
 
-This step must be carried out by the dDID controller, that is, the [uDID subject](roles.md#upstream-entity-udid-subject).
+This step must be carried out by the [dDID issuer](roles.md#ddid-issuer).
 
 We assume that the downsteam legal entity has published their candidate dDID document and shared their candidate dDID (string identifier) with the controller. In the following commands, replace `<CANDIDATE_dDID>` with the candidate dDID and `<uDID>` with the controller's DID.