Adding repo add to both cord and seba installation docs

Change-Id: I3e42e8ba2d2c540d0a73ea3eee6717bfb5c444b6
diff --git a/platform.md b/platform.md
index d14697c..9f09d67 100644
--- a/platform.md
+++ b/platform.md
@@ -5,7 +5,9 @@
 
 ## CORD Platform as a Whole
 
-To install the CORD Platform you can use the corresponding chart:
+{% include "partials/helm/add-cord-repo.md" %}
+
+Then, to install the CORD Platform you can use the corresponding chart:
 
 ```shell
 helm install -n cord-platform cord/cord-platform --version=6.1.0
diff --git a/profiles/seba/install.md b/profiles/seba/install.md
index f32b61f..d57c7d2 100644
--- a/profiles/seba/install.md
+++ b/profiles/seba/install.md
@@ -19,6 +19,10 @@
 
 ### SEBA as a whole
 
+{% include "../../partials/helm/add-cord-repo.md" %}
+
+Then, proceed with the SEBA chart installation:
+
 ```shell
 helm install -n seba cord/seba --version=1.0.0
 ```