dhi: update nav wording (#23208)

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## Description

Updated DHI nav wording. DHI -> Hardened Images
Updated screenshots

## Related issues or tickets

ENGDOCS-2905

## Reviews

<!-- Notes for reviewers here -->
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- [ ] Editorial review

Signed-off-by: Craig <craig.osterhout@docker.com>

content/manuals/dhi/get-started.md

@@ -25,7 +25,7 @@ namespace on Docker Hub.
 1. Go to [Docker Hub](https://hub.docker.com) and sign in.
 2. Select **My Hub** in the top navigation.
 3. In the left sidebar, choose your organization that has DHI access.
-4. In the left sidebar, select **DHI** > **Catalog**.
+4. In the left sidebar, select **Hardened Images** > **Catalog**.
 
    ![Docker Hub sidebar showing DHI catalog](./images/dhi-catalog.png)
 

content/manuals/dhi/how-to/customize.md

@@ -24,7 +24,7 @@ To customize a Docker Hardened Image, follow these steps:
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization that has a mirrored DHI
    repository.
-4. Select **DHI** > **Management**.
+4. Select **Hardened Images** > **Management**.
 5. For the mirrored DHI repository you want to customize, select the menu icon in the far right column.
 6. Select **Customize**.
 
@@ -100,7 +100,7 @@ To edit or delete a Docker Hardened Image customization, follow these steps:
 1. Sign in to [Docker Hub](https://hub.docker.com).
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization that has a mirrored DHI.
-4. Select **DHI** > **Management**.
+4. Select **Hardened Images** > **Management**.
 5. Select **Customizations**.
 
 6. For the customized DHI repository you want to manage, select the menu icon in the far right column.

content/manuals/dhi/how-to/explore.md

@@ -28,7 +28,7 @@ To explore Docker Hardened Images (DHI):
 1. Go to [Docker Hub](https://hub.docker.com) and sign in.
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization that has access to DHI.
-4. Select **DHI** > **Catalog**.
+4. Select **Hardened Images** > **Catalog**.
 
 On the DHI page, you can browse images, search images, or filter images by
 category.
@@ -40,7 +40,7 @@ To view repository details:
 1. Go to [Docker Hub](https://hub.docker.com) and sign in.
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization that has access to DHI.
-4. Select **DHI** > **Catalog**.
+4. Select **Hardened Images** > **Catalog**.
 5. Select a repository in the DHI catalog list.
 
 The repository details page provides the following:
@@ -67,7 +67,7 @@ To explore image variants:
 1. Go to [Docker Hub](https://hub.docker.com) and sign in.
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization that has access to DHI.
-4. Select **DHI** > **Catalog**.
+4. Select **Hardened Images** > **Catalog**.
 5. Select a repository in the DHI catalog list.
 6. Select **Tags**.
 
@@ -98,7 +98,7 @@ To explore the details of an image variant:
 1. Go to [Docker Hub](https://hub.docker.com) and sign in.
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization that has access to DHI.
-4. Select **DHI** > **Catalog**.
+4. Select **Hardened Images** > **Catalog**.
 5. Select a repository in the DHI catalog list.
 6. Select **Tags**.
 7. Select the image variant's tag in the table.

content/manuals/dhi/how-to/manage.md

@@ -19,7 +19,7 @@ To manage your mirrored DHI repositories:
 1. Go to the [Docker Hub](https://hub.docker.com) and sign in.
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization.
-4. Select **DHI** > **Management**.
+4. Select **Hardened Images** > **Management**.
 
    On this page, you can view your mirrored DHI
    repositories and view which source repositories they are mirrored from.
@@ -38,7 +38,7 @@ To manage your customized DHI repositories:
 1. Go to [Docker Hub](https://hub.docker.com) and sign in.
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization.
-4. Select **DHI** > **Management**.
+4. Select **Hardened Images** > **Management**.
 5. Select **Customizations**.
 
    On this page, you can view your customized DHI

content/manuals/dhi/how-to/mirror.md

@@ -31,7 +31,7 @@ To mirror a Docker Hardened Image repository:
 1. Go to [Docker Hub](https://hub.docker.com) and sign in.
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization that has access to DHI.
-4. Select **DHI** > **Catalog**.
+4. Select **Hardened Images** > **Catalog**.
 5. Select a DHI repository to view its details.
 6. Select **Mirror to repository** and follow the on-screen instructions.
 
@@ -119,7 +119,7 @@ repository.
 1. Go to [Docker Hub](https://hub.docker.com) and sign in.
 2. Select **My Hub**.
 3. In the namespace drop-down, select your organization that has access to DHI.
-4. Select **DHI** > **Management**.
+4. Select **Hardened Images** > **Management**.
 5. In the far right column of the repository you want to stop mirroring, select the menu icon.
 6. Select **Stop mirroring**.