Replace hardcoded image links (#1151)

Replace hardcoded images/logos in the `get-started` and `deploy-manage`
section.

Author: charlotte-hoblik

Diff for: deploy-manage/deploy/elastic-cloud/create-serverless-project.md

@@ -17,7 +17,7 @@ Choose the type of project that matches your needs and we’ll help you get star
 |     |     |
 | --- | --- |
 |  |  |
-| ![elasticsearch](https://www.elastic.co/docs/assets/images/elasticsearch.png "elasticsearch =50%") | **Elasticsearch**<br> Build custom search applications with {{es}}.<br><br>[**View guide →**](/solutions/search/serverless-elasticsearch-get-started.md)<br> |
-| ![observability](https://www.elastic.co/docs/assets/images/observability.png "observability =50%") | **Observability**<br> Monitor applications and systems with Elastic Observability.<br><br>[**View guide →**](/solutions/observability/get-started/create-an-observability-project.md)<br> |
-| ![security](https://www.elastic.co/docs/assets/images/security.png "security =50%") | **Security**<br> Detect, investigate, and respond to threats with Elastic Security.<br><br>[**View guide →**](/solutions/security/get-started/create-security-project.md)<br> |
+| ![elasticsearch](../../images/64x64_Color_elasticsearch-logo-color-64px.png "elasticsearch =50%") | **Elasticsearch**<br> Build custom search applications with {{es}}.<br><br>[**View guide →**](/solutions/search/serverless-elasticsearch-get-started.md)<br> |
+| ![observability](../../images/64x64_Color_observability-logo-color-64px.png "observability =50%") | **Observability**<br> Monitor applications and systems with Elastic Observability.<br><br>[**View guide →**](/solutions/observability/get-started/create-an-observability-project.md)<br> |
+| ![security](../../images/64x64_Color_security-logo-color-64px.png "security =50%") | **Security**<br> Detect, investigate, and respond to threats with Elastic Security.<br><br>[**View guide →**](/solutions/security/get-started/create-security-project.md)<br> |
 |  |  |

Diff for: deploy-manage/images/64x64_Color_elasticsearch-logo-color-64px.png

@@ -32,9 +32,9 @@ Elasticsearch supports diverse use cases. Select a solution and follow its dedic
 
 |     |     |
 | --- | --- |
-| ![elasticsearch](https://www.elastic.co/docs/assets/images/elasticsearch.png "elasticsearch =50%") | **Elasticsearch**<br> Create seamless search experiences for apps, websites, or workplaces.<br><br>[**Get started →**](../solutions/search/get-started.md)<br> |
-| ![observability](https://www.elastic.co/docs/assets/images/observability.png "observability =50%") | **Observability**<br> Monitor logs, metrics, and traces to gain insight into your systems.<br><br>[**Get started →**](../solutions/observability/get-started.md)<br> |
-| ![security](https://www.elastic.co/docs/assets/images/security.png "security =50%") | **Security**<br> Monitor logs, metrics, and traces to gain insight into your systems.<br><br>[**Get started →**](../solutions/security/get-started.md)<br> |
+| ![elasticsearch](images/64x64_Color_elasticsearch-logo-color-64px.png "elasticsearch =50%") | **Elasticsearch**<br> Create seamless search experiences for apps, websites, or workplaces.<br><br>[**Get started →**](../solutions/search/get-started.md)<br> |
+| ![observability](images/64x64_Color_observability-logo-color-64px.png "observability =50%") | **Observability**<br> Monitor logs, metrics, and traces to gain insight into your systems.<br><br>[**Get started →**](../solutions/observability/get-started.md)<br> |
+| ![security](images/64x64_Color_security-logo-color-64px.png "security =50%") | **Security**<br> Monitor logs, metrics, and traces to gain insight into your systems.<br><br>[**Get started →**](../solutions/security/get-started.md)<br> |
 
 ## Next steps