c/bmaas/bmdb/webug: fix links to providers

Change-Id: I606d368675dad4a46fa0b276ff8a109d08a745b6
Reviewed-on: https://review.monogon.dev/c/monogon/+/1506
Tested-by: Jenkins CI
Reviewed-by: Tim Windelschmidt <tim@monogon.tech>
diff --git a/cloud/bmaas/bmdb/webug/templates/fragment_tag_provided.html b/cloud/bmaas/bmdb/webug/templates/fragment_tag_provided.html
index 776a63d..299752d 100644
--- a/cloud/bmaas/bmdb/webug/templates/fragment_tag_provided.html
+++ b/cloud/bmaas/bmdb/webug/templates/fragment_tag_provided.html
@@ -1,3 +1,3 @@
 {{- $provider := (.Field "provider").HumanValue }}
 {{- $pid := (.Field "provider_id").HumanValue }}
-<b>{{ .Type.Name }}</b>({{- $provider }}, <a href="provider/{{ $provider }}/{{ $pid }}" style="font-family: mono">{{ $pid }}</a>)
+<b>{{ .Type.Name }}</b>({{- $provider }}, <a href="/provider/{{ $provider }}/{{ $pid }}" style="font-family: mono">{{ $pid }}</a>)