docs: add better instructions for OTel example (#1896)

Signed-off-by: Shivang Shandilya <101946115+ShivangShandilya@users.noreply.github.com>
Co-authored-by: Moritz Wiesinger <moritz.wiesinger@dynatrace.com>
Co-authored-by: Meg McRoberts <meg.mcroberts@dynatrace.com>

docs/content/en/docs/implementing/otel.md

@@ -117,6 +117,10 @@ using the default configuration included with Keptn,
 use the following commands.
 Use similar commands if you define a different configuration::
 
+> **Note**
+You must clone  the `lifecycle-toolkit` repository and `cd` into the correct directory
+(`examples/support/observability`) before running the following commands.
+
 ```shell
 kubectl create namespace monitoring
 kubectl apply --server-side -f config/prometheus/setup