docs: be accurate on --image-prefix option (#1103)

The docs used to say that the prefix is used for all images, but in fact
it's actually only used for the collector. Updated the docs for now, but
we can opt to change how it actually works.

Also... I personally feel that being able to specify the image with the
version instead of providing a prefix is better interface for setting
collector images.

---------

Co-authored-by: Amir Blum <[email protected]>

docs/cli/odigos_install.mdx

@@ -40,7 +40,7 @@ odigos install [flags]
  --odiglet-image odiglet container image name
  --instrumentor-image instrumentor container image name
  --autoscaler-image autoscaler container image name
- --image-prefix prefix for all container images. used when your cluster doesn't have access to docker hub
+ --image-prefix prefix for collector images. Used when your cluster doesn't have access to docker hub.
  --psp enable pod security policy
 ```
 
@@ -55,6 +55,6 @@ All the other options are targeting advanced users with custom and unique use ca
 
 ## SEE ALSO
 
-* [odigos](/cli/odigos.md)  - odigos CLI
-* [odigos uninstall](/cli/odigos_uninstall.md)  - unistall Odigos from your cluster
-* [odigos upgrade](/cli/odigos_upgrade.md)  - upgrade odigos version in your cluster.
+* [odigos](/cli/odigos.md) - odigos CLI
+* [odigos uninstall](/cli/odigos_uninstall.md) - unistall Odigos from your cluster
+* [odigos upgrade](/cli/odigos_upgrade.md) - upgrade odigos version in your cluster.